<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019c6738-e14a-7dd4-ae54-cb6fe972aa9d,g:2757206d-d4d1-4d71-93ab-4809dcca4c3a-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.agcocorp.com/role/BasisofPresentationDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#BasisofPresentationDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/BasisofPresentationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:href="agco-20260331.xsd#agco_BasisOfPresentationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_BasisOfPresentationTable_019c6738-e4a7-7e8b-9402-9b7dd01ec7ee" xlink:href="agco-20260331.xsd#agco_BasisOfPresentationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_agco_BasisOfPresentationTable_019c6738-e4a7-7e8b-9402-9b7dd01ec7ee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019c6738-e4a7-7f3b-a262-fb333190ea19" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_BasisOfPresentationTable_019c6738-e4a7-7e8b-9402-9b7dd01ec7ee" xlink:to="loc_srt_StatementGeographicalAxis_019c6738-e4a7-7f3b-a262-fb333190ea19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e4a7-7f3b-a262-fb333190ea19_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e4a7-7f3b-a262-fb333190ea19" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e4a7-7f3b-a262-fb333190ea19_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e4a7-7d89-9dac-2f499bd3d7b9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e4a7-7f3b-a262-fb333190ea19" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e4a7-7d89-9dac-2f499bd3d7b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_TR_019c6738-e4a7-7af7-93f6-1edf9be699b6" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_TR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a7-7d89-9dac-2f499bd3d7b9" xlink:to="loc_country_TR_019c6738-e4a7-7af7-93f6-1edf9be699b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_AR_019c6738-e4a7-7f5f-90cb-6fbf796c9f79" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_AR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a7-7d89-9dac-2f499bd3d7b9" xlink:to="loc_country_AR_019c6738-e4a7-7f5f-90cb-6fbf796c9f79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_019c6738-e4a7-7bc7-b735-7a4404ce2f9f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_BasisOfPresentationTable_019c6738-e4a7-7e8b-9402-9b7dd01ec7ee" xlink:to="loc_srt_ConsolidatedEntitiesAxis_019c6738-e4a7-7bc7-b735-7a4404ce2f9f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019c6738-e4a7-7bc7-b735-7a4404ce2f9f_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019c6738-e4a7-7bc7-b735-7a4404ce2f9f" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019c6738-e4a7-7bc7-b735-7a4404ce2f9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_019c6738-e4a7-73d8-9d93-92b241c6b52e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_019c6738-e4a7-7bc7-b735-7a4404ce2f9f" xlink:to="loc_srt_ConsolidatedEntitiesDomain_019c6738-e4a7-73d8-9d93-92b241c6b52e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_019c6738-e4a7-7cb0-821d-e4acf28f1c6e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_019c6738-e4a7-73d8-9d93-92b241c6b52e" xlink:to="loc_srt_SubsidiariesMember_019c6738-e4a7-7cb0-821d-e4acf28f1c6e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_019c6738-e4a7-7237-95a5-13c832d6b369" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_BasisOfPresentationTable_019c6738-e4a7-7e8b-9402-9b7dd01ec7ee" xlink:to="loc_srt_CurrencyAxis_019c6738-e4a7-7237-95a5-13c832d6b369" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019c6738-e4a7-7237-95a5-13c832d6b369_default" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_019c6738-e4a7-7237-95a5-13c832d6b369" xlink:to="loc_currency_AllCurrenciesDomain_019c6738-e4a7-7237-95a5-13c832d6b369_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019c6738-e4a7-7b30-bfa1-210f77262b0d" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_019c6738-e4a7-7237-95a5-13c832d6b369" xlink:to="loc_currency_AllCurrenciesDomain_019c6738-e4a7-7b30-bfa1-210f77262b0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_TRY_019c6738-e4a7-77af-8a8b-a54f45902fb1" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_TRY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019c6738-e4a7-7b30-bfa1-210f77262b0d" xlink:to="loc_currency_TRY_019c6738-e4a7-77af-8a8b-a54f45902fb1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_ARS_019c6738-e4a7-7409-9567-c430f60c8716" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_ARS"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019c6738-e4a7-7b30-bfa1-210f77262b0d" xlink:to="loc_currency_ARS_019c6738-e4a7-7409-9567-c430f60c8716" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019c6738-e4a7-78a3-9f1e-f27b08369fb9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_BasisOfPresentationTable_019c6738-e4a7-7e8b-9402-9b7dd01ec7ee" xlink:to="loc_dei_LegalEntityAxis_019c6738-e4a7-78a3-9f1e-f27b08369fb9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019c6738-e4a7-78a3-9f1e-f27b08369fb9_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019c6738-e4a7-78a3-9f1e-f27b08369fb9" xlink:to="loc_dei_EntityDomain_019c6738-e4a7-78a3-9f1e-f27b08369fb9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019c6738-e4a7-7d35-b85a-e8777af9388a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019c6738-e4a7-78a3-9f1e-f27b08369fb9" xlink:to="loc_dei_EntityDomain_019c6738-e4a7-7d35-b85a-e8777af9388a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AGCOCapitalArgentinaSAMember_019c6738-e4a7-70ba-954b-01cfc43012b7" xlink:href="agco-20260331.xsd#agco_AGCOCapitalArgentinaSAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019c6738-e4a7-7d35-b85a-e8777af9388a" xlink:to="loc_agco_AGCOCapitalArgentinaSAMember_019c6738-e4a7-70ba-954b-01cfc43012b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c6738-e4a7-7f63-ba16-c9b966d8fef7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c6738-e4a7-7f63-ba16-c9b966d8fef7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019c6738-e4a7-75f8-8b9b-cc44f5520770" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_us-gaap_Assets_019c6738-e4a7-75f8-8b9b-cc44f5520770" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetReportingCurrencyDenominatedValue_019c6738-e4a7-7b03-89c0-b83b28542639" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetReportingCurrencyDenominatedValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_us-gaap_AssetReportingCurrencyDenominatedValue_019c6738-e4a7-7b03-89c0-b83b28542639" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityReportingCurrencyDenominatedValue_019c6738-e4a7-75b4-88b5-558eb9f18fcf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilityReportingCurrencyDenominatedValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_us-gaap_LiabilityReportingCurrencyDenominatedValue_019c6738-e4a7-75b4-88b5-558eb9f18fcf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019c6738-e4a7-7c1f-afa7-fe25af4d6b97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019c6738-e4a7-7c1f-afa7-fe25af4d6b97" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNet_019c6738-e4a7-7a72-9c48-efd4f9487a0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_BasisOfPresentationLineItems_019c6738-e4a7-7b40-bd63-a7ba1fb0d259" xlink:to="loc_us-gaap_AssetsNet_019c6738-e4a7-7a72-9c48-efd4f9487a0f" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/AccountsReceivableSalesAgreementsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#AccountsReceivableSalesAgreementsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/AccountsReceivableSalesAgreementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019c6738-e4a8-76d5-9388-604c1a357aca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019c6738-e4a8-71c1-b4e9-eba22720a008" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019c6738-e4a8-76d5-9388-604c1a357aca" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019c6738-e4a8-71c1-b4e9-eba22720a008" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019c6738-e4a8-726f-99ca-c284972f2ca8" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019c6738-e4a8-71c1-b4e9-eba22720a008" xlink:to="loc_srt_StatementGeographicalAxis_019c6738-e4a8-726f-99ca-c284972f2ca8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-726f-99ca-c284972f2ca8_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e4a8-726f-99ca-c284972f2ca8" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-726f-99ca-c284972f2ca8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7cd6-8730-6c2d5f32fd7a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e4a8-726f-99ca-c284972f2ca8" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7cd6-8730-6c2d5f32fd7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_UnitedStatesCanadaEuropeandBrazilMember_019c6738-e4a8-7d46-a365-685307e6bd5d" xlink:href="agco-20260331.xsd#agco_UnitedStatesCanadaEuropeandBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7cd6-8730-6c2d5f32fd7a" xlink:to="loc_agco_UnitedStatesCanadaEuropeandBrazilMember_019c6738-e4a8-7d46-a365-685307e6bd5d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019c6738-e4a8-7780-9749-e4ae33102cef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019c6738-e4a8-71c1-b4e9-eba22720a008" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019c6738-e4a8-7780-9749-e4ae33102cef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019c6738-e4a8-7780-9749-e4ae33102cef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019c6738-e4a8-7780-9749-e4ae33102cef" xlink:to="loc_us-gaap_ReceivableTypeDomain_019c6738-e4a8-7780-9749-e4ae33102cef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019c6738-e4a8-7f29-a2f4-bca835dde30e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019c6738-e4a8-7780-9749-e4ae33102cef" xlink:to="loc_us-gaap_ReceivableTypeDomain_019c6738-e4a8-7f29-a2f4-bca835dde30e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_019c6738-e4a8-7e1d-9b2f-46de2d705b33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019c6738-e4a8-7f29-a2f4-bca835dde30e" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_019c6738-e4a8-7e1d-9b2f-46de2d705b33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-7274-9469-3ec7a28e3029" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019c6738-e4a8-71c1-b4e9-eba22720a008" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-7274-9469-3ec7a28e3029" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-7274-9469-3ec7a28e3029_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-7274-9469-3ec7a28e3029" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-7274-9469-3ec7a28e3029_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-75fe-a822-ca4607b0ecc0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-7274-9469-3ec7a28e3029" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-75fe-a822-ca4607b0ecc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherExpenseMember_019c6738-e4a8-7797-8faa-cf9aa6b71f49" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-75fe-a822-ca4607b0ecc0" xlink:to="loc_us-gaap_OtherExpenseMember_019c6738-e4a8-7797-8faa-cf9aa6b71f49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferOfFinancialAssetsAccountedForAsSalesCashProceedsReceivedForAssetsDerecognizedAmount_019c6738-e4a8-726e-97f6-e68f4a1c6bbb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransferOfFinancialAssetsAccountedForAsSalesCashProceedsReceivedForAssetsDerecognizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019c6738-e4a8-76d5-9388-604c1a357aca" xlink:to="loc_us-gaap_TransferOfFinancialAssetsAccountedForAsSalesCashProceedsReceivedForAssetsDerecognizedAmount_019c6738-e4a8-726e-97f6-e68f4a1c6bbb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_019c6738-e4a8-7562-a707-f9ce3fd2fe86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019c6738-e4a8-76d5-9388-604c1a357aca" xlink:to="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_019c6738-e4a8-7562-a707-f9ce3fd2fe86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_OutstandingAccountsReceivablesOfReceivablesSoldToRetailFinanceJointVenturesWhoProvideFinancingToCompanyDealers_019c6738-e4a8-73e1-9622-4c4b2005bf74" xlink:href="agco-20260331.xsd#agco_OutstandingAccountsReceivablesOfReceivablesSoldToRetailFinanceJointVenturesWhoProvideFinancingToCompanyDealers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019c6738-e4a8-76d5-9388-604c1a357aca" xlink:to="loc_agco_OutstandingAccountsReceivablesOfReceivablesSoldToRetailFinanceJointVenturesWhoProvideFinancingToCompanyDealers_019c6738-e4a8-73e1-9622-4c4b2005bf74" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofGoodwillDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#GoodwillandOtherIntangibleAssetsScheduleofGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_019c6738-e4a8-718a-997b-3cd1b0a6b234" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_019c6738-e4a8-7ebc-977e-f1635d2162cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_019c6738-e4a8-718a-997b-3cd1b0a6b234" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_019c6738-e4a8-7ebc-977e-f1635d2162cf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019c6738-e4a8-7cda-83ed-7fce7f46acb3" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019c6738-e4a8-7ebc-977e-f1635d2162cf" xlink:to="loc_srt_StatementGeographicalAxis_019c6738-e4a8-7cda-83ed-7fce7f46acb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7cda-83ed-7fce7f46acb3_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e4a8-7cda-83ed-7fce7f46acb3" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7cda-83ed-7fce7f46acb3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7a08-80dc-88c0f5e1560b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e4a8-7cda-83ed-7fce7f46acb3" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7a08-80dc-88c0f5e1560b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NorthAmericaMember_019c6738-e4a8-7c7c-8e76-bee191402602" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NorthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7a08-80dc-88c0f5e1560b" xlink:to="loc_srt_NorthAmericaMember_019c6738-e4a8-7c7c-8e76-bee191402602" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LatinAmericaMember_019d8ad6-7bd6-7b02-b248-98c142439770" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_LatinAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7a08-80dc-88c0f5e1560b" xlink:to="loc_srt_LatinAmericaMember_019d8ad6-7bd6-7b02-b248-98c142439770" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_EMEMember_019c6738-e4a8-7e46-9180-807b99dcc51c" xlink:href="agco-20260331.xsd#agco_EMEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7a08-80dc-88c0f5e1560b" xlink:to="loc_agco_EMEMember_019c6738-e4a8-7e46-9180-807b99dcc51c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_APAMember_019c6738-e4a8-74b1-a0ca-a9345c2cb1a0" xlink:href="agco-20260331.xsd#agco_APAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e4a8-7a08-80dc-88c0f5e1560b" xlink:to="loc_agco_APAMember_019c6738-e4a8-74b1-a0ca-a9345c2cb1a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_019c6738-e4a8-7379-b58e-15ea6c283191" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019c6738-e4a8-718a-997b-3cd1b0a6b234" xlink:to="loc_us-gaap_GoodwillRollForward_019c6738-e4a8-7379-b58e-15ea6c283191" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019c6738-e4a8-7eac-95c5-64751532eacf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_019c6738-e4a8-7379-b58e-15ea6c283191" xlink:to="loc_us-gaap_Goodwill_019c6738-e4a8-7eac-95c5-64751532eacf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_019c6738-e4a8-7a55-9006-bd1cc0565288" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_019c6738-e4a8-7379-b58e-15ea6c283191" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_019c6738-e4a8-7a55-9006-bd1cc0565288" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019c6738-e4a8-7032-bee1-e514908e8225" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofChangeinCarryingAmountofIntangibleAssetsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#GoodwillandOtherIntangibleAssetsScheduleofChangeinCarryingAmountofIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsScheduleofChangeinCarryingAmountofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-77dc-a3bd-8b8c85076908" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019c6738-e4a8-7787-a5fd-e5c3db55ecb0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-77dc-a3bd-8b8c85076908" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019c6738-e4a8-7787-a5fd-e5c3db55ecb0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-7d43-a180-5feffcea0c83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019c6738-e4a8-7787-a5fd-e5c3db55ecb0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-7d43-a180-5feffcea0c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-7d43-a180-5feffcea0c83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-7d43-a180-5feffcea0c83" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-7d43-a180-5feffcea0c83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-709e-9a76-eaa53c733285" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-7d43-a180-5feffcea0c83" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-709e-9a76-eaa53c733285" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_019c6738-e4a8-719e-9c71-42cd68f645d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-709e-9a76-eaa53c733285" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_019c6738-e4a8-719e-9c71-42cd68f645d5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_019c6738-e4a8-771a-8ebc-c47f0f8666c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-709e-9a76-eaa53c733285" xlink:to="loc_us-gaap_CustomerRelationshipsMember_019c6738-e4a8-771a-8ebc-c47f0f8666c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_TechnologyAndPatentsMember_019c6738-e4a8-7e0e-a006-5b796e4815af" xlink:href="agco-20260331.xsd#agco_TechnologyAndPatentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-709e-9a76-eaa53c733285" xlink:to="loc_agco_TechnologyAndPatentsMember_019c6738-e4a8-7e0e-a006-5b796e4815af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_019c6738-e4a8-74f1-9910-14295d79a668" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-709e-9a76-eaa53c733285" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_019c6738-e4a8-74f1-9910-14295d79a668" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-7966-88aa-7162db4144a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-77dc-a3bd-8b8c85076908" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-7966-88aa-7162db4144a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019c6738-e4a8-731d-8376-5cafc747e77d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-7966-88aa-7162db4144a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019c6738-e4a8-731d-8376-5cafc747e77d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_019d68b0-3d9e-751d-9100-033261c66a8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-7966-88aa-7162db4144a4" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_019d68b0-3d9e-751d-9100-033261c66a8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss_019c6738-e4a8-7f34-8ea2-1bb24fe9f445" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-7966-88aa-7162db4144a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss_019c6738-e4a8-7f34-8ea2-1bb24fe9f445" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019c6738-e4a8-77c2-8376-4d6e995cbae2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AccumulatedAmortizationRollForward_019c6738-e4a8-7c90-8e3b-479d12047710" xlink:href="agco-20260331.xsd#agco_AccumulatedAmortizationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-77dc-a3bd-8b8c85076908" xlink:to="loc_agco_AccumulatedAmortizationRollForward_019c6738-e4a8-7c90-8e3b-479d12047710" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019c6738-e4a8-7c57-9e45-7f272e515159" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedAmortizationRollForward_019c6738-e4a8-7c90-8e3b-479d12047710" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019c6738-e4a8-7c57-9e45-7f272e515159" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019c6738-e4a8-72a1-b1c6-f62b38124a9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedAmortizationRollForward_019c6738-e4a8-7c90-8e3b-479d12047710" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019c6738-e4a8-72a1-b1c6-f62b38124a9f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_FiniteLivedIntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationGainLoss_019c6738-e4a8-723f-920d-32cd8972358e" xlink:href="agco-20260331.xsd#agco_FiniteLivedIntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedAmortizationRollForward_019c6738-e4a8-7c90-8e3b-479d12047710" xlink:to="loc_agco_FiniteLivedIntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationGainLoss_019c6738-e4a8-723f-920d-32cd8972358e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019c6738-e4a8-7183-8f41-77993bd7783f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsIndefiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#GoodwillandOtherIntangibleAssetsIndefiniteLivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsIndefiniteLivedIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019c6738-e4a8-7f32-a135-e47f4779f7e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019c6738-e4a8-7154-a03a-77f30ad35934" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019c6738-e4a8-7f32-a135-e47f4779f7e2" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019c6738-e4a8-7154-a03a-77f30ad35934" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-792d-9ccc-7983fba1be74" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019c6738-e4a8-7154-a03a-77f30ad35934" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-792d-9ccc-7983fba1be74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-792d-9ccc-7983fba1be74_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-792d-9ccc-7983fba1be74" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-792d-9ccc-7983fba1be74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-75f2-8a44-7229aad33157" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019c6738-e4a8-792d-9ccc-7983fba1be74" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-75f2-8a44-7229aad33157" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_019c6738-e4a8-737f-9b68-b81289ca83a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019c6738-e4a8-75f2-8a44-7229aad33157" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_019c6738-e4a8-737f-9b68-b81289ca83a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-713c-b770-2d89a6e75e29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019c6738-e4a8-7f32-a135-e47f4779f7e2" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-713c-b770-2d89a6e75e29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019c6738-e4a8-7b32-bf00-399fe796b4b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-713c-b770-2d89a6e75e29" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019c6738-e4a8-7b32-bf00-399fe796b4b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss_019c6738-e4a8-763c-bcb5-01fa421a7e1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019c6738-e4a8-713c-b770-2d89a6e75e29" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss_019c6738-e4a8-763c-bcb5-01fa421a7e1b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019c6738-e4a8-73c0-b341-7dc44db18923" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#GoodwillandOtherIntangibleAssetsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/GoodwillandOtherIntangibleAssetsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-7788-9a8c-d4fa2d28cd88" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019c6738-e4a8-7e94-a1ca-184922307ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-7788-9a8c-d4fa2d28cd88" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019c6738-e4a8-7e94-a1ca-184922307ed3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019c6738-e4a8-74a1-8449-d7f14832bf16" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_019c6738-e4a8-7e94-a1ca-184922307ed3" xlink:to="loc_srt_RangeAxis_019c6738-e4a8-74a1-8449-d7f14832bf16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019c6738-e4a8-74a1-8449-d7f14832bf16_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019c6738-e4a8-74a1-8449-d7f14832bf16" xlink:to="loc_srt_RangeMember_019c6738-e4a8-74a1-8449-d7f14832bf16_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019c6738-e4a8-792b-86f0-373c0c034f03" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019c6738-e4a8-74a1-8449-d7f14832bf16" xlink:to="loc_srt_RangeMember_019c6738-e4a8-792b-86f0-373c0c034f03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019c6738-e4a8-7837-8738-6fe6f7e2c9b5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019c6738-e4a8-792b-86f0-373c0c034f03" xlink:to="loc_srt_MinimumMember_019c6738-e4a8-7837-8738-6fe6f7e2c9b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019c6738-e4a8-79ce-97cf-e0973ea9e316" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019c6738-e4a8-792b-86f0-373c0c034f03" xlink:to="loc_srt_MaximumMember_019c6738-e4a8-79ce-97cf-e0973ea9e316" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_019c6738-e4a8-7557-88f6-d74d80e4e266" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_019c6738-e4a8-7788-9a8c-d4fa2d28cd88" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_019c6738-e4a8-7557-88f6-d74d80e4e266" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/ProductWarrantyNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#ProductWarrantyNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/ProductWarrantyNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductWarrantyLiabilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyLiabilityTable_019c6738-e4a8-7aa6-be70-c39a93901c11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductWarrantyLiabilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:to="loc_us-gaap_ProductWarrantyLiabilityTable_019c6738-e4a8-7aa6-be70-c39a93901c11" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019c6738-e4a8-781f-bbb2-9619c9bcb105" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProductWarrantyLiabilityTable_019c6738-e4a8-7aa6-be70-c39a93901c11" xlink:to="loc_srt_RangeAxis_019c6738-e4a8-781f-bbb2-9619c9bcb105" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019c6738-e4a8-781f-bbb2-9619c9bcb105_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019c6738-e4a8-781f-bbb2-9619c9bcb105" xlink:to="loc_srt_RangeMember_019c6738-e4a8-781f-bbb2-9619c9bcb105_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019c6738-e4a8-7ab8-98a7-773636c1002e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019c6738-e4a8-781f-bbb2-9619c9bcb105" xlink:to="loc_srt_RangeMember_019c6738-e4a8-7ab8-98a7-773636c1002e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019c6738-e4a8-799c-9df0-5ffe00f7b292" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019c6738-e4a8-7ab8-98a7-773636c1002e" xlink:to="loc_srt_MinimumMember_019c6738-e4a8-799c-9df0-5ffe00f7b292" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019c6738-e4a8-7567-9ed1-4d184839d169" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019c6738-e4a8-7ab8-98a7-773636c1002e" xlink:to="loc_srt_MaximumMember_019c6738-e4a8-7567-9ed1-4d184839d169" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ProductWarrantyPeriodMinimum_019c6738-e4a8-7748-be4b-c8e892ca70b1" xlink:href="agco-20260331.xsd#agco_ProductWarrantyPeriodMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:to="loc_agco_ProductWarrantyPeriodMinimum_019c6738-e4a8-7748-be4b-c8e892ca70b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ProductWarrantyPeriodMaximum_019c6738-e4a8-7939-82c6-55651e2b8006" xlink:href="agco-20260331.xsd#agco_ProductWarrantyPeriodMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:to="loc_agco_ProductWarrantyPeriodMaximum_019c6738-e4a8-7939-82c6-55651e2b8006" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ExtendedProductWarrantyPeriod_019c6738-e4a8-78df-9781-f92caa46d0bb" xlink:href="agco-20260331.xsd#agco_ExtendedProductWarrantyPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:to="loc_agco_ExtendedProductWarrantyPeriod_019c6738-e4a8-78df-9781-f92caa46d0bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_019c6738-e4a8-7830-831f-dab7ca0294da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:to="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_019c6738-e4a8-7830-831f-dab7ca0294da" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualNoncurrent_019c6738-e4a8-7359-8be2-b4df2b8643ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductWarrantyAccrualNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantyLiabilityLineItems_019c6738-e4a8-7faf-937d-b89bb1bc5a32" xlink:to="loc_us-gaap_ProductWarrantyAccrualNoncurrent_019c6738-e4a8-7359-8be2-b4df2b8643ba" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/SupplierFinanceProgramsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#SupplierFinanceProgramsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/SupplierFinanceProgramsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramLineItems_019c6738-e4a8-7f70-86b2-2eea223b120f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SupplierFinanceProgramLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramTable_019c6738-e4a8-7a5f-8641-65bc0c247339" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SupplierFinanceProgramTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SupplierFinanceProgramLineItems_019c6738-e4a8-7f70-86b2-2eea223b120f" xlink:to="loc_us-gaap_SupplierFinanceProgramTable_019c6738-e4a8-7a5f-8641-65bc0c247339" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019c6738-e4a8-736e-94b5-69b24e022ea4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SupplierFinanceProgramTable_019c6738-e4a8-7a5f-8641-65bc0c247339" xlink:to="loc_srt_RangeAxis_019c6738-e4a8-736e-94b5-69b24e022ea4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019c6738-e4a8-736e-94b5-69b24e022ea4_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019c6738-e4a8-736e-94b5-69b24e022ea4" xlink:to="loc_srt_RangeMember_019c6738-e4a8-736e-94b5-69b24e022ea4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019c6738-e4a8-7650-b911-c736cd7d8fa4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019c6738-e4a8-736e-94b5-69b24e022ea4" xlink:to="loc_srt_RangeMember_019c6738-e4a8-7650-b911-c736cd7d8fa4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019c6738-e4a8-766f-a27b-42653aa775d9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019c6738-e4a8-7650-b911-c736cd7d8fa4" xlink:to="loc_srt_MinimumMember_019c6738-e4a8-766f-a27b-42653aa775d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019c6738-e4a8-7fc5-87b4-921ee42d12d8" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019c6738-e4a8-7650-b911-c736cd7d8fa4" xlink:to="loc_srt_MaximumMember_019c6738-e4a8-7fc5-87b4-921ee42d12d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramPaymentTimingPeriod_019c6738-e4a8-7025-90a8-60d87c6ce47d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SupplierFinanceProgramPaymentTimingPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplierFinanceProgramLineItems_019c6738-e4a8-7f70-86b2-2eea223b120f" xlink:to="loc_us-gaap_SupplierFinanceProgramPaymentTimingPeriod_019c6738-e4a8-7025-90a8-60d87c6ce47d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligationCurrent_019c6738-e4a8-7b15-a687-dd6861aa9c3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SupplierFinanceProgramObligationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplierFinanceProgramLineItems_019c6738-e4a8-7f70-86b2-2eea223b120f" xlink:to="loc_us-gaap_SupplierFinanceProgramObligationCurrent_019c6738-e4a8-7b15-a687-dd6861aa9c3b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/IndebtednessComponentsofIndebtednessDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#IndebtednessComponentsofIndebtednessDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/IndebtednessComponentsofIndebtednessDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019c6738-e4a8-7b90-b43b-9925e45c8535" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_DebtInstrumentTable_019c6738-e4a8-7b90-b43b-9925e45c8535" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019c6738-e4a8-78ab-9603-eafe43e7b5ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019c6738-e4a8-7b90-b43b-9925e45c8535" xlink:to="loc_us-gaap_CreditFacilityAxis_019c6738-e4a8-78ab-9603-eafe43e7b5ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019c6738-e4a8-78ab-9603-eafe43e7b5ea_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019c6738-e4a8-78ab-9603-eafe43e7b5ea" xlink:to="loc_us-gaap_CreditFacilityDomain_019c6738-e4a8-78ab-9603-eafe43e7b5ea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019c6738-e4a8-712b-a571-38c679ad8e1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019c6738-e4a8-78ab-9603-eafe43e7b5ea" xlink:to="loc_us-gaap_CreditFacilityDomain_019c6738-e4a8-712b-a571-38c679ad8e1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019c6738-e4a8-7fd7-9255-3f20e3488ca0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019c6738-e4a8-712b-a571-38c679ad8e1b" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019c6738-e4a8-7fd7-9255-3f20e3488ca0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_MultiCurrencyFinanceContractMember_019c6738-e4a8-70d5-a310-69d680512756" xlink:href="agco-20260331.xsd#agco_MultiCurrencyFinanceContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019c6738-e4a8-712b-a571-38c679ad8e1b" xlink:to="loc_agco_MultiCurrencyFinanceContractMember_019c6738-e4a8-70d5-a310-69d680512756" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e4a8-721f-b83d-07f81a3d2460" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019c6738-e4a8-7b90-b43b-9925e45c8535" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e4a8-721f-b83d-07f81a3d2460" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e4a8-721f-b83d-07f81a3d2460_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e4a8-721f-b83d-07f81a3d2460" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e4a8-721f-b83d-07f81a3d2460_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e4a8-74f9-af9e-0684662400e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e4a8-721f-b83d-07f81a3d2460" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e4a8-74f9-af9e-0684662400e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019c6738-e4a8-7bd4-907e-5e8d8c08139d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e4a8-74f9-af9e-0684662400e2" xlink:to="loc_us-gaap_LineOfCreditMember_019c6738-e4a8-7bd4-907e-5e8d8c08139d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019c6738-e4a8-721c-8b44-b5afcdd30e3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e4a8-74f9-af9e-0684662400e2" xlink:to="loc_us-gaap_SeniorNotesMember_019c6738-e4a8-721c-8b44-b5afcdd30e3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019c6738-e4a8-741c-8956-b48c19b36982" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019c6738-e4a8-7b90-b43b-9925e45c8535" xlink:to="loc_us-gaap_DebtInstrumentAxis_019c6738-e4a8-741c-8956-b48c19b36982" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-741c-8956-b48c19b36982_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019c6738-e4a8-741c-8956-b48c19b36982" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-741c-8956-b48c19b36982_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019c6738-e4a8-741c-8956-b48c19b36982" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_RevolvingCreditFacilityAndTermLoanExpires2027Member_019c6738-e4a8-74b2-aeb3-7d231a0022cb" xlink:href="agco-20260331.xsd#agco_RevolvingCreditFacilityAndTermLoanExpires2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_RevolvingCreditFacilityAndTermLoanExpires2027Member_019c6738-e4a8-74b2-aeb3-7d231a0022cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_A5.450SeniorNotesDue2027Member_019c6738-e4a8-7926-a4bd-f9a542a32742" xlink:href="agco-20260331.xsd#agco_A5.450SeniorNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_A5.450SeniorNotesDue2027Member_019c6738-e4a8-7926-a4bd-f9a542a32742" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_SeniorNotesDue2034Member_019c6738-e4a8-77f4-9f9c-9df58713ed87" xlink:href="agco-20260331.xsd#agco_SeniorNotesDue2034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_SeniorNotesDue2034Member_019c6738-e4a8-77f4-9f9c-9df58713ed87" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_A0800SeniorNotesDue2028Member_019c6738-e4a8-7b4f-987a-4e0e32d2a613" xlink:href="agco-20260331.xsd#agco_A0800SeniorNotesDue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_A0800SeniorNotesDue2028Member_019c6738-e4a8-7b4f-987a-4e0e32d2a613" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_EuropeanInvestmentBankEIBSeniorTermLoanDue2029Member_019c6738-e4a8-7057-be52-21ab2feda3b9" xlink:href="agco-20260331.xsd#agco_EuropeanInvestmentBankEIBSeniorTermLoanDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_EuropeanInvestmentBankEIBSeniorTermLoanDue2029Member_019c6738-e4a8-7057-be52-21ab2feda3b9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_EuropeanInvestmentBankEIBMultiCurrencyFacilityDue2030Member_019c6738-e4a8-71c6-8832-3152030b6421" xlink:href="agco-20260331.xsd#agco_EuropeanInvestmentBankEIBMultiCurrencyFacilityDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_EuropeanInvestmentBankEIBMultiCurrencyFacilityDue2030Member_019c6738-e4a8-71c6-8832-3152030b6421" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_SeniorTermLoansDueBetween2025And2028Member_019c6738-e4a8-7493-8005-a0dcc0d1f7f9" xlink:href="agco-20260331.xsd#agco_SeniorTermLoansDueBetween2025And2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_SeniorTermLoansDueBetween2025And2028Member_019c6738-e4a8-7493-8005-a0dcc0d1f7f9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_SeniorTermLoansDue2026Member_019d433d-9a0c-790e-b50c-d21180d1de34" xlink:href="agco-20260331.xsd#agco_SeniorTermLoansDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e4a8-768a-9029-445ffc03916e" xlink:to="loc_agco_SeniorTermLoansDue2026Member_019d433d-9a0c-790e-b50c-d21180d1de34" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019c6738-e4a8-7f6f-aa1f-08c54b74dd78" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019c6738-e4a8-7f6f-aa1f-08c54b74dd78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019c6738-e4a8-7dd7-847b-4afd158548e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019c6738-e4a8-7dd7-847b-4afd158548e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_019c6738-e4a8-70b1-aa20-9a5d1228fbb2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNoncurrentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_019c6738-e4a8-70b1-aa20-9a5d1228fbb2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019c6738-e4a8-7702-a69f-4345ddfce571" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_LongTermDebt_019c6738-e4a8-7702-a69f-4345ddfce571" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019c6738-e4a8-7545-b4aa-c9c477a09138" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_LongTermDebtCurrent_019c6738-e4a8-7545-b4aa-c9c477a09138" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019c6738-e4a8-7fd0-b6e4-b1450085ba3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c6738-e4a8-79fd-9337-c27fe2ad9bdf" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019c6738-e4a8-7fd0-b6e4-b1450085ba3f" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/IndebtednessNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#IndebtednessNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/IndebtednessNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019d68c5-8a5b-7ec6-a8fc-1e7a97f01df7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:to="loc_us-gaap_DebtInstrumentTable_019d68c5-8a5b-7ec6-a8fc-1e7a97f01df7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019d68c5-8a5b-7dce-9598-5c4f5663b297" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d68c5-8a5b-7ec6-a8fc-1e7a97f01df7" xlink:to="loc_us-gaap_CreditFacilityAxis_019d68c5-8a5b-7dce-9598-5c4f5663b297" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019d68c5-8a5b-7dce-9598-5c4f5663b297_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019d68c5-8a5b-7dce-9598-5c4f5663b297" xlink:to="loc_us-gaap_CreditFacilityDomain_019d68c5-8a5b-7dce-9598-5c4f5663b297_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019d68c5-8a5b-7536-8a10-6f9162eb28a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019d68c5-8a5b-7dce-9598-5c4f5663b297" xlink:to="loc_us-gaap_CreditFacilityDomain_019d68c5-8a5b-7536-8a10-6f9162eb28a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019d68c5-8a5b-7235-b627-485f52cf06a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019d68c5-8a5b-7536-8a10-6f9162eb28a5" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019d68c5-8a5b-7235-b627-485f52cf06a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019d68c5-8a5b-7f24-be72-3f684cf3a349" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d68c5-8a5b-7ec6-a8fc-1e7a97f01df7" xlink:to="loc_us-gaap_DebtInstrumentAxis_019d68c5-8a5b-7f24-be72-3f684cf3a349" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019d68c5-8a5b-7f24-be72-3f684cf3a349_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019d68c5-8a5b-7f24-be72-3f684cf3a349" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019d68c5-8a5b-7f24-be72-3f684cf3a349_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019d68c5-8a5b-7e54-accd-bf0059cac3e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019d68c5-8a5b-7f24-be72-3f684cf3a349" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019d68c5-8a5b-7e54-accd-bf0059cac3e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_A125BillionMultiCurrencyUnsecuredCreditFacilityMember_019d68c5-8a5b-798e-b966-a812822f2167" xlink:href="agco-20260331.xsd#agco_A125BillionMultiCurrencyUnsecuredCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019d68c5-8a5b-7e54-accd-bf0059cac3e5" xlink:to="loc_agco_A125BillionMultiCurrencyUnsecuredCreditFacilityMember_019d68c5-8a5b-798e-b966-a812822f2167" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_UncommittedRevolvingCreditFacilityMember_019d68c5-f870-7775-b550-6cdc064f281e" xlink:href="agco-20260331.xsd#agco_UncommittedRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019d68c5-8a5b-7e54-accd-bf0059cac3e5" xlink:to="loc_agco_UncommittedRevolvingCreditFacilityMember_019d68c5-f870-7775-b550-6cdc064f281e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019d68c5-8a5b-74ce-a7ac-9124715557b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d68c5-8a5b-7ec6-a8fc-1e7a97f01df7" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019d68c5-8a5b-74ce-a7ac-9124715557b0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019d68c5-8a5b-74ce-a7ac-9124715557b0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019d68c5-8a5b-74ce-a7ac-9124715557b0" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019d68c5-8a5b-74ce-a7ac-9124715557b0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019d68c5-8a5b-7d9c-a462-291723d92754" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019d68c5-8a5b-74ce-a7ac-9124715557b0" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019d68c5-8a5b-7d9c-a462-291723d92754" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019d68c5-8a5b-7f44-8fd4-2af8e0a7a296" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019d68c5-8a5b-7d9c-a462-291723d92754" xlink:to="loc_us-gaap_LineOfCreditMember_019d68c5-8a5b-7f44-8fd4-2af8e0a7a296" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_019d68c6-6946-7d50-af45-9d164644c899" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019d68c5-8a5b-7ec6-a8fc-1e7a97f01df7" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_019d68c6-6946-7d50-af45-9d164644c899" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_019d68c6-6946-7d50-af45-9d164644c899_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_019d68c6-6946-7d50-af45-9d164644c899" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_019d68c6-6946-7d50-af45-9d164644c899_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_019d68c6-6946-7b86-8512-f3158ba0b009" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_019d68c6-6946-7d50-af45-9d164644c899" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_019d68c6-6946-7b86-8512-f3158ba0b009" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ShortTermDebtOtherMember_019d68c6-6946-711e-bae2-9c3503b53828" xlink:href="agco-20260331.xsd#agco_ShortTermDebtOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_019d68c6-6946-7b86-8512-f3158ba0b009" xlink:to="loc_agco_ShortTermDebtOtherMember_019d68c6-6946-711e-bae2-9c3503b53828" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019d68c5-8a5b-7ef0-995a-c23aa494cf66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019d68c5-8a5b-7ef0-995a-c23aa494cf66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019d68c5-8a5b-7b53-8ec3-ec3b1d8ecd6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:to="loc_us-gaap_LineOfCredit_019d68c5-8a5b-7b53-8ec3-ec3b1d8ecd6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019d68c5-8a5b-7fd6-9536-33e9ed386a6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019d68c5-8a5b-7fd6-9536-33e9ed386a6f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_019d68c6-6946-7d7f-8571-3af560c7a9c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:to="loc_us-gaap_ShortTermBorrowings_019d68c6-6946-7d7f-8571-3af560c7a9c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019d68c6-6946-7b45-84fa-b28447d78859" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019d68c5-8a5b-7e68-9ca0-9405e6f8f701" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019d68c6-6946-7b45-84fa-b28447d78859" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/RestructuringandBusinessOptimizationExpensesNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#RestructuringandBusinessOptimizationExpensesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/RestructuringandBusinessOptimizationExpensesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-71e1-8139-ca1a2cdf4ce7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019c6738-e4a8-7609-891b-91278a63ec51" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-71e1-8139-ca1a2cdf4ce7" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019c6738-e4a8-7609-891b-91278a63ec51" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-790a-b712-5d968eaff223" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019c6738-e4a8-7609-891b-91278a63ec51" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-790a-b712-5d968eaff223" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-790a-b712-5d968eaff223_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-790a-b712-5d968eaff223" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-790a-b712-5d968eaff223_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7b58-a898-55695d63d5e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-790a-b712-5d968eaff223" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7b58-a898-55695d63d5e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_BusinessOptimizationMember_019c6738-e4a8-7068-ba4b-9c62232109a1" xlink:href="agco-20260331.xsd#agco_BusinessOptimizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7b58-a898-55695d63d5e6" xlink:to="loc_agco_BusinessOptimizationMember_019c6738-e4a8-7068-ba4b-9c62232109a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveCurrent_019c6738-e4a8-7e52-903d-190174d305c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserveCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-71e1-8139-ca1a2cdf4ce7" xlink:to="loc_us-gaap_RestructuringReserveCurrent_019c6738-e4a8-7e52-903d-190174d305c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveNoncurrent_019c6738-e4a8-7d6c-84bb-ef79cb898128" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserveNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-71e1-8139-ca1a2cdf4ce7" xlink:to="loc_us-gaap_RestructuringReserveNoncurrent_019c6738-e4a8-7d6c-84bb-ef79cb898128" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019c6738-e4a8-7722-bdba-63eea116fd9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-71e1-8139-ca1a2cdf4ce7" xlink:to="loc_us-gaap_RestructuringCharges_019c6738-e4a8-7722-bdba-63eea116fd9e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/RestructuringandBusinessOptimizationExpensesRestructuringExpenseActivityDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#RestructuringandBusinessOptimizationExpensesRestructuringExpenseActivityDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/RestructuringandBusinessOptimizationExpensesRestructuringExpenseActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-7e3f-9e98-4d91e66ea17c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019c6738-e4a8-7291-9dc1-58a1d008481e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-7e3f-9e98-4d91e66ea17c" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019c6738-e4a8-7291-9dc1-58a1d008481e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-7ad0-bb64-d3ada0014ea7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019c6738-e4a8-7291-9dc1-58a1d008481e" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-7ad0-bb64-d3ada0014ea7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7ad0-bb64-d3ada0014ea7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-7ad0-bb64-d3ada0014ea7" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7ad0-bb64-d3ada0014ea7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7795-a85b-1331306c4ade" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019c6738-e4a8-7ad0-bb64-d3ada0014ea7" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7795-a85b-1331306c4ade" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_019c6738-e4a8-71f5-90f6-f0ca2658e7b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019c6738-e4a8-7795-a85b-1331306c4ade" xlink:to="loc_us-gaap_EmployeeSeveranceMember_019c6738-e4a8-71f5-90f6-f0ca2658e7b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_019c6738-e4a8-74ee-bf59-b1c2fcf4e038" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019c6738-e4a8-7e3f-9e98-4d91e66ea17c" xlink:to="loc_us-gaap_RestructuringReserveRollForward_019c6738-e4a8-74ee-bf59-b1c2fcf4e038" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_019c6738-e4a8-717a-8a58-85e86924cb59" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019c6738-e4a8-74ee-bf59-b1c2fcf4e038" xlink:to="loc_us-gaap_RestructuringReserve_019c6738-e4a8-717a-8a58-85e86924cb59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019c6738-e4a8-7d96-a35c-3f3f0ce24bef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019c6738-e4a8-74ee-bf59-b1c2fcf4e038" xlink:to="loc_us-gaap_RestructuringCharges_019c6738-e4a8-7d96-a35c-3f3f0ce24bef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_019c6738-e4a8-7f63-98d5-2a2b10a009f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019c6738-e4a8-74ee-bf59-b1c2fcf4e038" xlink:to="loc_us-gaap_PaymentsForRestructuring_019c6738-e4a8-7f63-98d5-2a2b10a009f1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveTranslationAdjustment_019c6738-e4a8-78ab-94bb-d29e5baef822" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserveTranslationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019c6738-e4a8-74ee-bf59-b1c2fcf4e038" xlink:to="loc_us-gaap_RestructuringReserveTranslationAdjustment_019c6738-e4a8-78ab-94bb-d29e5baef822" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_019c6738-e4a8-70a5-b6cf-57f70f6be915" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserve"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#DerivativeInstrumentsandHedgingActivitiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019d8ade-7e3c-740f-874c-de429e82089b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019d8ade-7e3c-740f-874c-de429e82089b" xlink:to="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019d8ade-7e3c-77ad-b5b2-b0288cd65e7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019d8ade-7e3c-77ad-b5b2-b0288cd65e7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-77ad-b5b2-b0288cd65e7e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019d8ade-7e3c-77ad-b5b2-b0288cd65e7e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-77ad-b5b2-b0288cd65e7e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019d8ade-7e3c-77ad-b5b2-b0288cd65e7e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019d8ade-7e3c-7100-8a3e-d070e0ea8221" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019d8ade-7e3c-7100-8a3e-d070e0ea8221" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrencySwapMember_019d8ae2-c28e-761f-b019-954b320274f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrencySwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:to="loc_us-gaap_CurrencySwapMember_019d8ae2-c28e-761f-b019-954b320274f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_CrossCurrencySwapTrancheOneMember_019d8ae2-c28e-7997-a87e-39f64418262e" xlink:href="agco-20260331.xsd#agco_CrossCurrencySwapTrancheOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:to="loc_agco_CrossCurrencySwapTrancheOneMember_019d8ae2-c28e-7997-a87e-39f64418262e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_CrossCurrencySwapTrancheTwoMember_019d8ae2-c28e-7504-a8e9-2530e22da1a4" xlink:href="agco-20260331.xsd#agco_CrossCurrencySwapTrancheTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:to="loc_agco_CrossCurrencySwapTrancheTwoMember_019d8ae2-c28e-7504-a8e9-2530e22da1a4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_CrossCurrencySwapTrancheThreeMember_019d8ae2-c28e-79c6-9e6f-deb537f90cd8" xlink:href="agco-20260331.xsd#agco_CrossCurrencySwapTrancheThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:to="loc_agco_CrossCurrencySwapTrancheThreeMember_019d8ae2-c28e-79c6-9e6f-deb537f90cd8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_CrossCurrencySwapPaymentMember_019d8ae2-c28e-7310-bed8-3f0c09ab9494" xlink:href="agco-20260331.xsd#agco_CrossCurrencySwapPaymentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019d8ade-7e3c-760d-87c1-0651eb945be3" xlink:to="loc_agco_CrossCurrencySwapPaymentMember_019d8ae2-c28e-7310-bed8-3f0c09ab9494" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019d8ade-7e3c-7415-887f-350eaeefc8bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019d8ade-7e3c-7415-887f-350eaeefc8bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019d8ade-7e3c-7415-887f-350eaeefc8bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019d8ade-7e3c-7415-887f-350eaeefc8bd" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019d8ade-7e3c-7415-887f-350eaeefc8bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019d8ade-7e3c-778d-a14d-43d558ca4107" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019d8ade-7e3c-7415-887f-350eaeefc8bd" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019d8ade-7e3c-778d-a14d-43d558ca4107" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_019d8ade-7e3c-74b9-8ab3-9a24db178178" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019d8ade-7e3c-778d-a14d-43d558ca4107" xlink:to="loc_us-gaap_CashFlowHedgingMember_019d8ade-7e3c-74b9-8ab3-9a24db178178" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019d8ae2-c28e-7739-aefe-d0bf118e1177" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019d8ade-7e3c-778d-a14d-43d558ca4107" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019d8ae2-c28e-7739-aefe-d0bf118e1177" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019d8ade-7e3c-7792-8651-b92adf89771d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:to="loc_us-gaap_HedgingDesignationAxis_019d8ade-7e3c-7792-8651-b92adf89771d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019d8ade-7e3c-7792-8651-b92adf89771d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019d8ade-7e3c-7792-8651-b92adf89771d" xlink:to="loc_us-gaap_HedgingDesignationDomain_019d8ade-7e3c-7792-8651-b92adf89771d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019d8ade-7e3c-75c9-a3bf-f804bb77742f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019d8ade-7e3c-7792-8651-b92adf89771d" xlink:to="loc_us-gaap_HedgingDesignationDomain_019d8ade-7e3c-75c9-a3bf-f804bb77742f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019d8ade-7e3c-7b83-b102-bf9ea93cc071" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019d8ade-7e3c-75c9-a3bf-f804bb77742f" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019d8ade-7e3c-7b83-b102-bf9ea93cc071" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019d8ae3-596e-750e-9655-cb1a9682c9b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019d8ade-7e3c-75c9-a3bf-f804bb77742f" xlink:to="loc_us-gaap_NondesignatedMember_019d8ae3-596e-750e-9655-cb1a9682c9b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019d8adf-6e4f-7cc0-80c9-3fb78c4c3ddd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019d8adf-6e4f-7cc0-80c9-3fb78c4c3ddd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019d8adf-6e4f-7cc0-80c9-3fb78c4c3ddd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019d8adf-6e4f-7cc0-80c9-3fb78c4c3ddd" xlink:to="loc_us-gaap_EquityComponentDomain_019d8adf-6e4f-7cc0-80c9-3fb78c4c3ddd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019d8adf-6e4f-7983-b5c1-78e4e448869b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019d8adf-6e4f-7cc0-80c9-3fb78c4c3ddd" xlink:to="loc_us-gaap_EquityComponentDomain_019d8adf-6e4f-7983-b5c1-78e4e448869b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019d8adf-6e4f-759f-8b80-e47a67098f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019d8adf-6e4f-7983-b5c1-78e4e448869b" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019d8adf-6e4f-759f-8b80-e47a67098f6a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_019d8ae2-c28e-7305-9fac-35ee10dea714" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019d8ade-7e3c-7d9f-a180-573818fd3012" xlink:to="loc_srt_CurrencyAxis_019d8ae2-c28e-7305-9fac-35ee10dea714" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019d8ae2-c28e-7305-9fac-35ee10dea714_default" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_019d8ae2-c28e-7305-9fac-35ee10dea714" xlink:to="loc_currency_AllCurrenciesDomain_019d8ae2-c28e-7305-9fac-35ee10dea714_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019d8ae2-c28e-79ab-ab0f-bd4cd500abc6" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_019d8ae2-c28e-7305-9fac-35ee10dea714" xlink:to="loc_currency_AllCurrenciesDomain_019d8ae2-c28e-79ab-ab0f-bd4cd500abc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_EUR_019d8ae2-c28e-7fb0-8979-da97290adef8" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_EUR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019d8ae2-c28e-79ab-ab0f-bd4cd500abc6" xlink:to="loc_currency_EUR_019d8ae2-c28e-7fb0-8979-da97290adef8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_CHF_019d8ae2-c28e-72f4-ae91-2b1e06368371" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_CHF"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019d8ae2-c28e-79ab-ab0f-bd4cd500abc6" xlink:to="loc_currency_CHF_019d8ae2-c28e-72f4-ae91-2b1e06368371" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_019d8ade-7e3c-7500-9302-8020f904b60d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019d8ade-7e3c-740f-874c-de429e82089b" xlink:to="loc_us-gaap_DerivativeNotionalAmount_019d8ade-7e3c-7500-9302-8020f904b60d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1_019d8adf-6e4f-7559-81fd-b5c1f05e7082" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019d8ade-7e3c-740f-874c-de429e82089b" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1_019d8adf-6e4f-7559-81fd-b5c1f05e7082" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTermOfContract_019d8ae2-c28e-7949-976a-699fa7f4d9b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019d8ade-7e3c-740f-874c-de429e82089b" xlink:to="loc_us-gaap_DerivativeTermOfContract_019d8ae2-c28e-7949-976a-699fa7f4d9b7" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesSummaryOfAccumulatedOtherComprehensiveLossRelatedToDerivativesDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#DerivativeInstrumentsandHedgingActivitiesSummaryOfAccumulatedOtherComprehensiveLossRelatedToDerivativesDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesSummaryOfAccumulatedOtherComprehensiveLossRelatedToDerivativesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e4a8-7ffd-a620-b87efef792e4" xlink:href="agco-20260331.xsd#agco_ScheduleOfStockholdersEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-77e5-a3cc-d0071154ccf3" xlink:href="agco-20260331.xsd#agco_ScheduleOfStockholdersEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e4a8-7ffd-a620-b87efef792e4" xlink:to="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-77e5-a3cc-d0071154ccf3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7cb0-9dae-a81aeefd26db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-77e5-a3cc-d0071154ccf3" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7cb0-9dae-a81aeefd26db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7cb0-9dae-a81aeefd26db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7cb0-9dae-a81aeefd26db" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7cb0-9dae-a81aeefd26db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7a61-b25e-81406827be05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7cb0-9dae-a81aeefd26db" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7a61-b25e-81406827be05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019c6738-e4a8-7307-8d35-09b49f3453d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7a61-b25e-81406827be05" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019c6738-e4a8-7307-8d35-09b49f3453d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e83-9dc9-338d32689d42" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-77e5-a3cc-d0071154ccf3" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e83-9dc9-338d32689d42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e83-9dc9-338d32689d42_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e83-9dc9-338d32689d42" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e83-9dc9-338d32689d42_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7653-b28c-4610834bc5c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e83-9dc9-338d32689d42" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7653-b28c-4610834bc5c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019c6738-e4a8-7e08-962a-bdd7fb8875a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7653-b28c-4610834bc5c7" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019c6738-e4a8-7e08-962a-bdd7fb8875a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryLockMember_019c6738-e4a8-791e-af30-5f8a95e00ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryLockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7653-b28c-4610834bc5c7" xlink:to="loc_us-gaap_TreasuryLockMember_019c6738-e4a8-791e-af30-5f8a95e00ebb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodBeforeTaxRollForward_019c6738-e4a8-7033-9deb-043cc2c6d00e" xlink:href="agco-20260331.xsd#agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodBeforeTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e4a8-7ffd-a620-b87efef792e4" xlink:to="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodBeforeTaxRollForward_019c6738-e4a8-7033-9deb-043cc2c6d00e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1_019c6738-e4a8-79bf-b9ab-6fa80188902f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodBeforeTaxRollForward_019c6738-e4a8-7033-9deb-043cc2c6d00e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1_019c6738-e4a8-79bf-b9ab-6fa80188902f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_019c6738-e4a8-7a1d-a06e-bbd7b3fb5071" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodBeforeTaxRollForward_019c6738-e4a8-7033-9deb-043cc2c6d00e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_019c6738-e4a8-7a1d-a06e-bbd7b3fb5071" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_019c6738-e4a8-7505-bf4d-674d12bff107" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodBeforeTaxRollForward_019c6738-e4a8-7033-9deb-043cc2c6d00e" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_019c6738-e4a8-7505-bf4d-674d12bff107" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1_019c6738-e4a8-7b0c-8e00-25f29f9762ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodTaxRollForward_019c6738-e4a8-7eb2-893b-b71642f1c324" xlink:href="agco-20260331.xsd#agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e4a8-7ffd-a620-b87efef792e4" xlink:to="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodTaxRollForward_019c6738-e4a8-7eb2-893b-b71642f1c324" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax_019c6738-e4a8-7305-9e37-cfc8b2cf35a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodTaxRollForward_019c6738-e4a8-7eb2-893b-b71642f1c324" xlink:to="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax_019c6738-e4a8-7305-9e37-cfc8b2cf35a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_019c6738-e4a8-749e-b8c5-744d8496c55e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodTaxRollForward_019c6738-e4a8-7eb2-893b-b71642f1c324" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_019c6738-e4a8-749e-b8c5-744d8496c55e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_019c6738-e4a8-7d91-8aaa-748ec0261d29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodTaxRollForward_019c6738-e4a8-7eb2-893b-b71642f1c324" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_019c6738-e4a8-7d91-8aaa-748ec0261d29" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax_019c6738-e4a8-7ad7-be3e-2ee495c28aa8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodNetOfTaxRollForward_019c6738-e4a8-7dd6-8217-6e916aa2d10c" xlink:href="agco-20260331.xsd#agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodNetOfTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e4a8-7ffd-a620-b87efef792e4" xlink:to="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodNetOfTaxRollForward_019c6738-e4a8-7dd6-8217-6e916aa2d10c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e4a8-7178-a4d7-734cf9b3c2af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodNetOfTaxRollForward_019c6738-e4a8-7dd6-8217-6e916aa2d10c" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e4a8-7178-a4d7-734cf9b3c2af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_019c6738-e4a8-72ec-ac42-d71ee85791fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodNetOfTaxRollForward_019c6738-e4a8-7dd6-8217-6e916aa2d10c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_019c6738-e4a8-72ec-ac42-d71ee85791fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_019c6738-e4a8-7445-9479-c0ab94e4d99f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesInPeriodNetOfTaxRollForward_019c6738-e4a8-7dd6-8217-6e916aa2d10c" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_019c6738-e4a8-7445-9479-c0ab94e4d99f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e4a8-7e0c-826f-a8271d6641d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesNotionalValueandChangeinFairValueofNetInvestmentHedgesDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#DerivativeInstrumentsandHedgingActivitiesNotionalValueandChangeinFairValueofNetInvestmentHedgesDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesNotionalValueandChangeinFairValueofNetInvestmentHedgesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_019c6738-e4a8-7007-a4d0-9a9217d9f175" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_019c6738-e4a8-7545-a117-76fb483214c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_019c6738-e4a8-7007-a4d0-9a9217d9f175" xlink:to="loc_us-gaap_DerivativeTable_019c6738-e4a8-7545-a117-76fb483214c2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7d84-93bf-58447589d575" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019c6738-e4a8-7545-a117-76fb483214c2" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7d84-93bf-58447589d575" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7d84-93bf-58447589d575_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7d84-93bf-58447589d575" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7d84-93bf-58447589d575_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7607-a5ed-d6b72f4d2568" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7d84-93bf-58447589d575" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7607-a5ed-d6b72f4d2568" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CrossCurrencyInterestRateContractMember_019c6738-e4a8-770c-a071-8d58c9eb41b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CrossCurrencyInterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7607-a5ed-d6b72f4d2568" xlink:to="loc_us-gaap_CrossCurrencyInterestRateContractMember_019c6738-e4a8-770c-a071-8d58c9eb41b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019c6738-e4a8-7e07-9af9-ce1c8757701c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019c6738-e4a8-7545-a117-76fb483214c2" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019c6738-e4a8-7e07-9af9-ce1c8757701c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019c6738-e4a8-7e07-9af9-ce1c8757701c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019c6738-e4a8-7e07-9af9-ce1c8757701c" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019c6738-e4a8-7e07-9af9-ce1c8757701c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019c6738-e4a8-7940-84c7-7d5db616a8c9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019c6738-e4a8-7e07-9af9-ce1c8757701c" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019c6738-e4a8-7940-84c7-7d5db616a8c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019c6738-e4a8-70ce-87b6-680c1f752da5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019c6738-e4a8-7940-84c7-7d5db616a8c9" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019c6738-e4a8-70ce-87b6-680c1f752da5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7d1e-bdeb-573a1e72302f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_019c6738-e4a8-7545-a117-76fb483214c2" xlink:to="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7d1e-bdeb-573a1e72302f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7d1e-bdeb-573a1e72302f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7d1e-bdeb-573a1e72302f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7d1e-bdeb-573a1e72302f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-77be-ae11-8980e1c00cf1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7d1e-bdeb-573a1e72302f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-77be-ae11-8980e1c00cf1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019c6738-e4a8-7ae0-878a-5d75752780f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-77be-ae11-8980e1c00cf1" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019c6738-e4a8-7ae0-878a-5d75752780f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_019c6738-e4a8-722d-9c85-40f2e17a8c12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019c6738-e4a8-7007-a4d0-9a9217d9f175" xlink:to="loc_us-gaap_DerivativeNotionalAmount_019c6738-e4a8-722d-9c85-40f2e17a8c12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax_019c6738-e4a8-776f-8bea-b8564bb8ed39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019c6738-e4a8-7007-a4d0-9a9217d9f175" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax_019c6738-e4a8-776f-8bea-b8564bb8ed39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax_019c6738-e4a8-7c8b-be06-89d10a4d5a5c" xlink:href="agco-20260331.xsd#agco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019c6738-e4a8-7007-a4d0-9a9217d9f175" xlink:to="loc_agco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax_019c6738-e4a8-7c8b-be06-89d10a4d5a5c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAfterTax_019c6738-e4a8-7453-bc65-0a4aeab178a6" xlink:href="agco-20260331.xsd#agco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_019c6738-e4a8-7007-a4d0-9a9217d9f175" xlink:to="loc_agco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAfterTax_019c6738-e4a8-7453-bc65-0a4aeab178a6" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesDerivativesnotDesignatedasHedgingInstrumentsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#DerivativeInstrumentsandHedgingActivitiesDerivativesnotDesignatedasHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesDerivativesnotDesignatedasHedgingInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_019c6738-e4a8-78d7-9b17-d56c9e7149c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_019c6738-e4a8-70f1-8e3d-757bdcfe965f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_019c6738-e4a8-78d7-9b17-d56c9e7149c7" xlink:to="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_019c6738-e4a8-70f1-8e3d-757bdcfe965f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e54-8cc4-fe545fafb718" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_019c6738-e4a8-70f1-8e3d-757bdcfe965f" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e54-8cc4-fe545fafb718" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e54-8cc4-fe545fafb718_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e54-8cc4-fe545fafb718" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e54-8cc4-fe545fafb718_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e3b-bff6-e42850088e54" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7e54-8cc4-fe545fafb718" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e3b-bff6-e42850088e54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019c6738-e4a8-7d0f-afbd-11b0d8aa817d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7e3b-bff6-e42850088e54" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019c6738-e4a8-7d0f-afbd-11b0d8aa817d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7e86-94e7-0d884d3b125d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_019c6738-e4a8-70f1-8e3d-757bdcfe965f" xlink:to="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7e86-94e7-0d884d3b125d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7e86-94e7-0d884d3b125d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7e86-94e7-0d884d3b125d" xlink:to="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7e86-94e7-0d884d3b125d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-74ec-a815-a0a52a78f8e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7e86-94e7-0d884d3b125d" xlink:to="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-74ec-a815-a0a52a78f8e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019c6738-e4a8-7e3b-9824-2ca1988adb14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-74ec-a815-a0a52a78f8e7" xlink:to="loc_us-gaap_NondesignatedMember_019c6738-e4a8-7e3b-9824-2ca1988adb14" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-78c7-9547-2bff31c5e98e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_019c6738-e4a8-70f1-8e3d-757bdcfe965f" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-78c7-9547-2bff31c5e98e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-78c7-9547-2bff31c5e98e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-78c7-9547-2bff31c5e98e" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-78c7-9547-2bff31c5e98e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-7eb9-ab6a-b3446ace1e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_019c6738-e4a8-78c7-9547-2bff31c5e98e" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-7eb9-ab6a-b3446ace1e5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseMember_019c6738-e4a8-7eef-87ce-21ba9af583c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_019c6738-e4a8-7eb9-ab6a-b3446ace1e5c" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpenseMember_019c6738-e4a8-7eef-87ce-21ba9af583c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019c6738-e4a8-78a0-ac09-7e5478900063" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_019c6738-e4a8-78d7-9b17-d56c9e7149c7" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_019c6738-e4a8-78a0-ac09-7e5478900063" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesFairValueOfDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#DerivativeInstrumentsandHedgingActivitiesFairValueOfDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/DerivativeInstrumentsandHedgingActivitiesFairValueOfDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019c6738-e4a8-7396-8c7e-e2d80e2078a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019c6738-e4a8-71e0-9e5c-10e32da2c9b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019c6738-e4a8-7396-8c7e-e2d80e2078a3" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019c6738-e4a8-71e0-9e5c-10e32da2c9b8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7570-8bef-0d687258f125" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019c6738-e4a8-71e0-9e5c-10e32da2c9b8" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7570-8bef-0d687258f125" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7570-8bef-0d687258f125_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7570-8bef-0d687258f125" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-7570-8bef-0d687258f125_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-796d-911c-8dfbdec62d9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e4a8-7570-8bef-0d687258f125" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-796d-911c-8dfbdec62d9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019c6738-e4a8-7bcc-b2cd-1f698e6dd49f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-796d-911c-8dfbdec62d9e" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019c6738-e4a8-7bcc-b2cd-1f698e6dd49f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrencySwapMember_019c6738-e4a8-7e61-83f8-45c66bab4149" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrencySwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e4a8-796d-911c-8dfbdec62d9e" xlink:to="loc_us-gaap_CurrencySwapMember_019c6738-e4a8-7e61-83f8-45c66bab4149" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7230-ac2d-5d227d910ad4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019c6738-e4a8-71e0-9e5c-10e32da2c9b8" xlink:to="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7230-ac2d-5d227d910ad4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7230-ac2d-5d227d910ad4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7230-ac2d-5d227d910ad4" xlink:to="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7230-ac2d-5d227d910ad4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7bd9-b0b1-d30019962ca8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019c6738-e4a8-7230-ac2d-5d227d910ad4" xlink:to="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7bd9-b0b1-d30019962ca8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019c6738-e4a8-734b-8f16-d8e19500864f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7bd9-b0b1-d30019962ca8" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019c6738-e4a8-734b-8f16-d8e19500864f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019c6738-e4a8-761e-90b4-f7e36db5dad8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019c6738-e4a8-7bd9-b0b1-d30019962ca8" xlink:to="loc_us-gaap_NondesignatedMember_019c6738-e4a8-761e-90b4-f7e36db5dad8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019c6738-e4a8-7a67-bf28-661d8de932de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019c6738-e4a8-7396-8c7e-e2d80e2078a3" xlink:to="loc_us-gaap_DerivativeAssets_019c6738-e4a8-7a67-bf28-661d8de932de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019c6738-e4a8-7124-9882-1cac7fa74f75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019c6738-e4a8-7396-8c7e-e2d80e2078a3" xlink:to="loc_us-gaap_DerivativeLiabilities_019c6738-e4a8-7124-9882-1cac7fa74f75" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/StockholdersEquityScheduleofStockholdersEquityDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#StockholdersEquityScheduleofStockholdersEquityDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/StockholdersEquityScheduleofStockholdersEquityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e571-7d50-b59c-f9055cbbee29" xlink:href="agco-20260331.xsd#agco_ScheduleOfStockholdersEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-71fc-a42e-186b57e1cfa2" xlink:href="agco-20260331.xsd#agco_ScheduleOfStockholdersEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e571-7d50-b59c-f9055cbbee29" xlink:to="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-71fc-a42e-186b57e1cfa2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7672-80b4-43a035529ec4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_agco_ScheduleOfStockholdersEquityTable_019c6738-e4a8-71fc-a42e-186b57e1cfa2" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7672-80b4-43a035529ec4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7672-80b4-43a035529ec4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7672-80b4-43a035529ec4" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-7672-80b4-43a035529ec4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-70c4-a3b7-e87579c05b5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e4a8-7672-80b4-43a035529ec4" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-70c4-a3b7-e87579c05b5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019c6738-e4a8-7dd1-b624-b0152af27a88" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-70c4-a3b7-e87579c05b5c" xlink:to="loc_us-gaap_CommonStockMember_019c6738-e4a8-7dd1-b624-b0152af27a88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019c6738-e571-7480-a1b4-9fb9c8f7796f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-70c4-a3b7-e87579c05b5c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019c6738-e571-7480-a1b4-9fb9c8f7796f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019c6738-e571-7a03-80d6-108acb96cd9d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-70c4-a3b7-e87579c05b5c" xlink:to="loc_us-gaap_RetainedEarningsMember_019c6738-e571-7a03-80d6-108acb96cd9d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-708d-81fd-d3d6d3cb452f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e4a8-70c4-a3b7-e87579c05b5c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-708d-81fd-d3d6d3cb452f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019c6738-e571-704f-82b5-1e68e13c9d78" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInTemporaryEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e571-7d50-b59c-f9055cbbee29" xlink:to="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019c6738-e571-704f-82b5-1e68e13c9d78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_019c6738-e571-7e50-8a45-4f3a3620a3fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019c6738-e571-704f-82b5-1e68e13c9d78" xlink:to="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_019c6738-e571-7e50-8a45-4f3a3620a3fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityNetIncome_019c6738-e571-77e3-909b-466ef8b58de3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TemporaryEquityNetIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019c6738-e571-704f-82b5-1e68e13c9d78" xlink:to="loc_us-gaap_TemporaryEquityNetIncome_019c6738-e571-77e3-909b-466ef8b58de3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments_019c6738-e571-7149-8089-d3959dbdbd1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019c6738-e571-704f-82b5-1e68e13c9d78" xlink:to="loc_us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments_019c6738-e571-7149-8089-d3959dbdbd1e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_019c6738-e571-7b94-8654-1e37f7fd53d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_agco_ScheduleOfStockholdersEquityLineItems_019c6738-e571-7d50-b59c-f9055cbbee29" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e571-7150-b939-3d8103a13a29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e571-7150-b939-3d8103a13a29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_APICShareBasedCompensationValueRequisiteServicePeriodRecognitionSharesIssuedSSARsExercisesNetOfTaxWithholdings_019ddf68-0a06-7cbd-b938-52a80af751d9" xlink:href="agco-20260331.xsd#agco_APICShareBasedCompensationValueRequisiteServicePeriodRecognitionSharesIssuedSSARsExercisesNetOfTaxWithholdings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:to="loc_agco_APICShareBasedCompensationValueRequisiteServicePeriodRecognitionSharesIssuedSSARsExercisesNetOfTaxWithholdings_019ddf68-0a06-7cbd-b938-52a80af751d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ForwardShareRepurchaseContractValue_019dafa7-6cbf-78da-b954-1cc4df06df46" xlink:href="agco-20260331.xsd#agco_ForwardShareRepurchaseContractValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:to="loc_agco_ForwardShareRepurchaseContractValue_019dafa7-6cbf-78da-b954-1cc4df06df46" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_019c6738-e571-7261-ad21-77dde94d6e95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_019c6738-e571-7261-ad21-77dde94d6e95" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019c6738-e571-79a0-b6db-2b3c78021188" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_019c6738-e571-7261-ad21-77dde94d6e95" xlink:to="loc_us-gaap_NetIncomeLoss_019c6738-e571-79a0-b6db-2b3c78021188" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019c6738-e571-7f41-a956-f7254a92b839" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_019c6738-e571-7261-ad21-77dde94d6e95" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019c6738-e571-7f41-a956-f7254a92b839" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019c6738-e571-7c30-be50-d4ba01e7f96a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019c6738-e571-7f41-a956-f7254a92b839" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019c6738-e571-7c30-be50-d4ba01e7f96a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019c6738-e571-7ddd-89c9-5fe3325523af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019c6738-e571-7f41-a956-f7254a92b839" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_019c6738-e571-7ddd-89c9-5fe3325523af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019c6738-e571-7c30-b845-547054e456e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_019c6738-e571-7f41-a956-f7254a92b839" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019c6738-e571-7c30-b845-547054e456e8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019c6738-e571-7820-9494-f239e1652aa8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019c6738-e571-7b96-aacc-6d9158d0c6c6" xlink:to="loc_us-gaap_DividendsCommonStockCash_019c6738-e571-7820-9494-f239e1652aa8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e571-73ee-aab1-745ce08bd8c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/StockholdersEquityChangesinAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#StockholdersEquityChangesinAccumulatedOtherComprehensiveIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/StockholdersEquityChangesinAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019c6738-e571-7b60-b6d0-53bd872cca22" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019c6738-e571-7d22-adf4-e444757a9428" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019c6738-e571-7b60-b6d0-53bd872cca22" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019c6738-e571-7d22-adf4-e444757a9428" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7dd4-a91e-6d65b93b1214" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019c6738-e571-7d22-adf4-e444757a9428" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7dd4-a91e-6d65b93b1214" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e571-7dd4-a91e-6d65b93b1214_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7dd4-a91e-6d65b93b1214" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e571-7dd4-a91e-6d65b93b1214_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e571-7ba7-9d49-6c4f059fd150" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7dd4-a91e-6d65b93b1214" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e571-7ba7-9d49-6c4f059fd150" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-7a4a-ae1a-2d1a0c3d1299" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e571-7ba7-9d49-6c4f059fd150" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-7a4a-ae1a-2d1a0c3d1299" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019c6738-e571-7b21-a00c-515f6da187f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-7a4a-ae1a-2d1a0c3d1299" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019c6738-e571-7b21-a00c-515f6da187f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019c6738-e571-7075-9023-e46fa56eb512" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-7a4a-ae1a-2d1a0c3d1299" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019c6738-e571-7075-9023-e46fa56eb512" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019c6738-e571-7a5e-a923-87c2080085e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019c6738-e571-7a4a-ae1a-2d1a0c3d1299" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019c6738-e571-7a5e-a923-87c2080085e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019c6738-e571-7e9b-aff2-994da765fe56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019c6738-e571-7b60-b6d0-53bd872cca22" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019c6738-e571-7e9b-aff2-994da765fe56" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e571-7020-a712-ed2a4c0a21df" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019c6738-e571-7e9b-aff2-994da765fe56" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e571-7020-a712-ed2a4c0a21df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_019c6738-e571-7103-8d41-683b4c646f5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019c6738-e571-7e9b-aff2-994da765fe56" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_019c6738-e571-7103-8d41-683b4c646f5c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_019c6738-e571-7290-b173-38ca563b53e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019c6738-e571-7e9b-aff2-994da765fe56" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_019c6738-e571-7290-b173-38ca563b53e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c6738-e571-7c2d-94d0-c163ec1fac04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019c6738-e571-7e9b-aff2-994da765fe56" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019c6738-e571-7c2d-94d0-c163ec1fac04" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019c6738-e571-778c-a3a3-5f9c686a1848" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/StockholdersEquityReclassificationsoutofAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#StockholdersEquityReclassificationsoutofAccumulatedOtherComprehensiveIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/StockholdersEquityReclassificationsoutofAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019c6738-e571-7515-9d60-392c494b673b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019c6738-e571-7515-9d60-392c494b673b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e571-710c-bf25-c8797b0a41f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019c6738-e571-7515-9d60-392c494b673b" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e571-710c-bf25-c8797b0a41f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e571-710c-bf25-c8797b0a41f3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e571-710c-bf25-c8797b0a41f3" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e571-710c-bf25-c8797b0a41f3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e571-73d9-85a3-87a7d366fcec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019c6738-e571-710c-bf25-c8797b0a41f3" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e571-73d9-85a3-87a7d366fcec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019c6738-e571-7f33-87c4-e360ed92e990" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e571-73d9-85a3-87a7d366fcec" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019c6738-e571-7f33-87c4-e360ed92e990" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryLockMember_019c6738-e571-7c72-a152-92d7554c3d50" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryLockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019c6738-e571-73d9-85a3-87a7d366fcec" xlink:to="loc_us-gaap_TreasuryLockMember_019c6738-e571-7c72-a152-92d7554c3d50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019c6738-e571-7799-b0b3-c14d8087492d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019c6738-e571-7515-9d60-392c494b673b" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019c6738-e571-7799-b0b3-c14d8087492d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019c6738-e571-7799-b0b3-c14d8087492d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019c6738-e571-7799-b0b3-c14d8087492d" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019c6738-e571-7799-b0b3-c14d8087492d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019c6738-e571-7efe-8b62-c073e7452681" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019c6738-e571-7799-b0b3-c14d8087492d" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019c6738-e571-7efe-8b62-c073e7452681" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019c6738-e571-783f-b9f7-31a91b6e5d70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019c6738-e571-7efe-8b62-c073e7452681" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019c6738-e571-783f-b9f7-31a91b6e5d70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7af3-9db8-efbc6478b4fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019c6738-e571-7515-9d60-392c494b673b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7af3-9db8-efbc6478b4fb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e571-7af3-9db8-efbc6478b4fb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7af3-9db8-efbc6478b4fb" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e571-7af3-9db8-efbc6478b4fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019c6738-e571-7bb2-834a-a5f4f9269464" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019c6738-e571-7af3-9db8-efbc6478b4fb" xlink:to="loc_us-gaap_EquityComponentDomain_019c6738-e571-7bb2-834a-a5f4f9269464" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019c6738-e571-7c66-a40e-048016638469" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e571-7bb2-834a-a5f4f9269464" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019c6738-e571-7c66-a40e-048016638469" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_019c6738-e571-71d6-a9e2-22acd1db2210" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e571-7bb2-834a-a5f4f9269464" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_019c6738-e571-71d6-a9e2-22acd1db2210" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_019c6738-e571-734b-a5be-9ddc7a39420a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e571-7bb2-834a-a5f4f9269464" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_019c6738-e571-734b-a5be-9ddc7a39420a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019c6738-e571-7e28-a827-82e852c3d01b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019c6738-e571-7bb2-834a-a5f4f9269464" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019c6738-e571-7e28-a827-82e852c3d01b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019c6738-e571-7908-b338-d6fe68da5609" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019c6738-e571-7908-b338-d6fe68da5609" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019c6738-e571-7ea8-8f23-1c478e411552" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019c6738-e571-7ea8-8f23-1c478e411552" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019c6738-e571-74d8-a66c-06de2323f1e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019c6738-e571-74d8-a66c-06de2323f1e9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_019c6738-e571-72d8-8ca2-2d2a186c36b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_019c6738-e571-72d8-8ca2-2d2a186c36b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019c6738-e571-7405-abd1-06fe17ceb12d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019c6738-e571-7405-abd1-06fe17ceb12d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019c6738-e571-757d-88a0-bc1455e9f4ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019c6738-e571-75f0-a9f3-681139b8998e" xlink:to="loc_us-gaap_NetIncomeLoss_019c6738-e571-757d-88a0-bc1455e9f4ce" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/StockholdersEquityNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#StockholdersEquityNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/StockholdersEquityNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019c6738-e571-7a0c-a834-94862d5d4d41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019c6738-e571-7a0c-a834-94862d5d4d41" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramAxis_019c6738-e571-7ee0-bc39-3e6366348e7f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019c6738-e571-7a0c-a834-94862d5d4d41" xlink:to="loc_srt_ShareRepurchaseProgramAxis_019c6738-e571-7ee0-bc39-3e6366348e7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-7ee0-bc39-3e6366348e7f_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ShareRepurchaseProgramAxis_019c6738-e571-7ee0-bc39-3e6366348e7f" xlink:to="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-7ee0-bc39-3e6366348e7f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-723d-8df6-6534357d9363" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ShareRepurchaseProgramAxis_019c6738-e571-7ee0-bc39-3e6366348e7f" xlink:to="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-723d-8df6-6534357d9363" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_NewShareRepurchaseProgramMember_019c6738-e571-7962-bd4f-d831c19cc2d9" xlink:href="agco-20260331.xsd#agco_NewShareRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-723d-8df6-6534357d9363" xlink:to="loc_agco_NewShareRepurchaseProgramMember_019c6738-e571-7962-bd4f-d831c19cc2d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AcceleratedShareRepurchaseMember_019c6738-e571-7673-9711-247a61894f8d" xlink:href="agco-20260331.xsd#agco_AcceleratedShareRepurchaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-723d-8df6-6534357d9363" xlink:to="loc_agco_AcceleratedShareRepurchaseMember_019c6738-e571-7673-9711-247a61894f8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ShareRepurchaseProgramMember_019c6738-e571-7a3b-94b9-e0162ece5e39" xlink:href="agco-20260331.xsd#agco_ShareRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_019c6738-e571-723d-8df6-6534357d9363" xlink:to="loc_agco_ShareRepurchaseProgramMember_019c6738-e571-7a3b-94b9-e0162ece5e39" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019d8b1d-f23c-742a-bf3a-6f8e36186b77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019c6738-e571-7a0c-a834-94862d5d4d41" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019d8b1d-f23c-742a-bf3a-6f8e36186b77" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019d8b1d-f23c-742a-bf3a-6f8e36186b77_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019d8b1d-f23c-742a-bf3a-6f8e36186b77" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019d8b1d-f23c-742a-bf3a-6f8e36186b77_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019d8b1d-f23c-7d91-8934-514f411c7d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019d8b1d-f23c-742a-bf3a-6f8e36186b77" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019d8b1d-f23c-7d91-8934-514f411c7d9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019d8b1e-529b-77e7-a597-0b2bd7409960" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019d8b1d-f23c-7d91-8934-514f411c7d9b" xlink:to="loc_us-gaap_SubsequentEventMember_019d8b1e-529b-77e7-a597-0b2bd7409960" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019c6738-e571-7c1f-b714-94cafe2d5a6d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019c6738-e571-7c1f-b714-94cafe2d5a6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_StockRepurchaseProgramNumberOfAgreementsEnteredInto_019d8b19-135b-7991-9f47-9022fae5b2f7" xlink:href="agco-20260331.xsd#agco_StockRepurchaseProgramNumberOfAgreementsEnteredInto"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_agco_StockRepurchaseProgramNumberOfAgreementsEnteredInto_019d8b19-135b-7991-9f47-9022fae5b2f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019c6738-e571-7286-8084-2de2c031a151" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019c6738-e571-7286-8084-2de2c031a151" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019c6738-e571-72b9-a921-fec212566e3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019c6738-e571-72b9-a921-fec212566e3e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_019c6738-e571-7ccb-9905-963ce9bbb3c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_019c6738-e571-7ccb-9905-963ce9bbb3c2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019c6738-e571-729e-b949-ba06615a08e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019c6738-e571-7303-a7e3-fea662a2baf2" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019c6738-e571-729e-b949-ba06615a08e5" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/PensionandPostretirementBenefitPlansNetPensionAndPostretirementCostDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#PensionandPostretirementBenefitPlansNetPensionAndPostretirementCostDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/PensionandPostretirementBenefitPlansNetPensionAndPostretirementCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019c6738-e571-7a9f-92df-6cbc1f2ab3a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019c6738-e571-7a9f-92df-6cbc1f2ab3a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7b2b-9d95-de662c95a410" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019c6738-e571-7a9f-92df-6cbc1f2ab3a8" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7b2b-9d95-de662c95a410" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7b2b-9d95-de662c95a410_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7b2b-9d95-de662c95a410" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7b2b-9d95-de662c95a410_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7ae9-90ba-ec91bade9ce0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7b2b-9d95-de662c95a410" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7ae9-90ba-ec91bade9ce0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_019c6738-e571-7f06-8316-959080c0fa93" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7ae9-90ba-ec91bade9ce0" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_019c6738-e571-7f06-8316-959080c0fa93" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_019c6738-e571-7cb2-9f01-ecac3a463d70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7ae9-90ba-ec91bade9ce0" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_019c6738-e571-7cb2-9f01-ecac3a463d70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_019c6738-e571-73cd-881b-c120f3dab0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_019c6738-e571-73cd-881b-c120f3dab0ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_019c6738-e571-733f-906b-9a67b3764c86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_019c6738-e571-733f-906b-9a67b3764c86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019c6738-e571-7c2b-a83d-1e26641d8afe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019c6738-e571-7c2b-a83d-1e26641d8afe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019c6738-e571-773f-89c2-81e9b1e1d8ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019c6738-e571-773f-89c2-81e9b1e1d8ff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_019c6738-e571-7c29-a6af-90723ae0c807" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_019c6738-e571-7c29-a6af-90723ae0c807" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019c6738-e571-7c84-89bc-f1849d508abc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7805-8756-77c0c8da8636" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019c6738-e571-7c84-89bc-f1849d508abc" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/PensionandPostretirementBenefitPlansNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#PensionandPostretirementBenefitPlansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/PensionandPostretirementBenefitPlansNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7dfa-bb45-4592f6f6c5a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019c6738-e571-7db2-959e-115d37b50c3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7dfa-bb45-4592f6f6c5a6" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019c6738-e571-7db2-959e-115d37b50c3f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7a0f-a1f1-3179b2bccc60" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019c6738-e571-7db2-959e-115d37b50c3f" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7a0f-a1f1-3179b2bccc60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7a0f-a1f1-3179b2bccc60_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7a0f-a1f1-3179b2bccc60" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-7a0f-a1f1-3179b2bccc60_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-770d-a35d-87648144e393" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_019c6738-e571-7a0f-a1f1-3179b2bccc60" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-770d-a35d-87648144e393" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_019d434d-3aee-77a2-941b-22d63bb97ced" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-770d-a35d-87648144e393" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_019d434d-3aee-77a2-941b-22d63bb97ced" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_019c6738-e571-7ecf-82e3-99343445e134" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_019c6738-e571-770d-a35d-87648144e393" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_019c6738-e571-7ecf-82e3-99343445e134" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_019c6738-e571-74e9-ab3a-87870e5b51cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7dfa-bb45-4592f6f6c5a6" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_019c6738-e571-74e9-ab3a-87870e5b51cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_019c6738-e571-7ef3-82de-3f7fffb6115c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019c6738-e571-7dfa-bb45-4592f6f6c5a6" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear_019c6738-e571-7ef3-82de-3f7fffb6115c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/FairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#FairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/FairValueofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7415-b6d0-127da512446f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7e68-b58b-4d4c1fe4476b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7415-b6d0-127da512446f" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7e68-b58b-4d4c1fe4476b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019c6738-e571-792f-bb94-e0d5966feb9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7e68-b58b-4d4c1fe4476b" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019c6738-e571-792f-bb94-e0d5966feb9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-792f-bb94-e0d5966feb9c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019c6738-e571-792f-bb94-e0d5966feb9c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-792f-bb94-e0d5966feb9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-7323-a769-60f8d54ef065" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019c6738-e571-792f-bb94-e0d5966feb9c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-7323-a769-60f8d54ef065" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019c6738-e571-75e4-923b-aa74eff19d05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-7323-a769-60f8d54ef065" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019c6738-e571-75e4-923b-aa74eff19d05" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019c6738-e571-7282-9d92-c3624deb1146" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-7323-a769-60f8d54ef065" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019c6738-e571-7282-9d92-c3624deb1146" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019c6738-e571-7105-a385-9229a199d1ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019c6738-e571-7323-a769-60f8d54ef065" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019c6738-e571-7105-a385-9229a199d1ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019c6738-e571-73a8-bd95-6f9347f3b122" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7415-b6d0-127da512446f" xlink:to="loc_us-gaap_DerivativeAssets_019c6738-e571-73a8-bd95-6f9347f3b122" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019c6738-e571-7f20-82ae-c41b8641ff8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7415-b6d0-127da512446f" xlink:to="loc_us-gaap_DerivativeLiabilities_019c6738-e571-7f20-82ae-c41b8641ff8c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/FairValueofFinancialInstrumentsNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#FairValueofFinancialInstrumentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/FairValueofFinancialInstrumentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7a42-9a60-0fa748abbc0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7ec5-8747-08baaef02787" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7a42-9a60-0fa748abbc0c" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7ec5-8747-08baaef02787" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019c6738-e571-7a3c-9a64-352254dffa14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7ec5-8747-08baaef02787" xlink:to="loc_us-gaap_DebtInstrumentAxis_019c6738-e571-7a3c-9a64-352254dffa14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a3c-9a64-352254dffa14_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019c6738-e571-7a3c-9a64-352254dffa14" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a3c-9a64-352254dffa14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a02-864a-b8f69d430878" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019c6738-e571-7a3c-9a64-352254dffa14" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a02-864a-b8f69d430878" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_A0800SeniorNotesDue2028Member_019c6738-e571-7808-8891-fbe28537b6cc" xlink:href="agco-20260331.xsd#agco_A0800SeniorNotesDue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a02-864a-b8f69d430878" xlink:to="loc_agco_A0800SeniorNotesDue2028Member_019c6738-e571-7808-8891-fbe28537b6cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_A5.450SeniorNotesDue2027Member_019c6738-e571-7ca1-b0d3-b2a37399d834" xlink:href="agco-20260331.xsd#agco_A5.450SeniorNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a02-864a-b8f69d430878" xlink:to="loc_agco_A5.450SeniorNotesDue2027Member_019c6738-e571-7ca1-b0d3-b2a37399d834" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_SeniorNotesDue2034Member_019c6738-e571-7172-ba98-83afdbc8382f" xlink:href="agco-20260331.xsd#agco_SeniorNotesDue2034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c6738-e571-7a02-864a-b8f69d430878" xlink:to="loc_agco_SeniorNotesDue2034Member_019c6738-e571-7172-ba98-83afdbc8382f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e571-730a-a0c8-5027505d5776" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019c6738-e571-7ec5-8747-08baaef02787" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e571-730a-a0c8-5027505d5776" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e571-730a-a0c8-5027505d5776_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e571-730a-a0c8-5027505d5776" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e571-730a-a0c8-5027505d5776_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e571-7c96-a9b4-8b3a90559ee0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019c6738-e571-730a-a0c8-5027505d5776" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e571-7c96-a9b4-8b3a90559ee0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019c6738-e571-756c-ac29-8ecb494e947d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019c6738-e571-7c96-a9b4-8b3a90559ee0" xlink:to="loc_us-gaap_SeniorNotesMember_019c6738-e571-756c-ac29-8ecb494e947d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019c6738-e571-7362-a468-2565b92d99e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7a42-9a60-0fa748abbc0c" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019c6738-e571-7362-a468-2565b92d99e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_019c6738-e571-735a-88de-f37edad282b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7a42-9a60-0fa748abbc0c" xlink:to="loc_us-gaap_DebtInstrumentFairValue_019c6738-e571-735a-88de-f37edad282b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019c6738-e571-71a9-a48c-e70207897bcf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019c6738-e571-7a42-9a60-0fa748abbc0c" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019c6738-e571-71a9-a48c-e70207897bcf" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#CommitmentsandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_019c6738-e571-72b3-a963-cddc41cf7c4c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_019c6738-e571-7f33-8961-fd2f7bdfbd4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_019c6738-e571-72b3-a963-cddc41cf7c4c" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_019c6738-e571-7f33-8961-fd2f7bdfbd4f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019c6738-e571-78dd-b895-2e3d5cc7b743" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_019c6738-e571-7f33-8961-fd2f7bdfbd4f" xlink:to="loc_srt_CounterpartyNameAxis_019c6738-e571-78dd-b895-2e3d5cc7b743" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019c6738-e571-78dd-b895-2e3d5cc7b743_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019c6738-e571-78dd-b895-2e3d5cc7b743" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019c6738-e571-78dd-b895-2e3d5cc7b743_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019c6738-e571-74db-8188-e8477c4ccf75" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019c6738-e571-78dd-b895-2e3d5cc7b743" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019c6738-e571-74db-8188-e8477c4ccf75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AGCOCapitalArgentinaSAMember_019c6738-e571-7d8b-9cde-0f55c40fba2c" xlink:href="agco-20260331.xsd#agco_AGCOCapitalArgentinaSAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019c6738-e571-74db-8188-e8477c4ccf75" xlink:to="loc_agco_AGCOCapitalArgentinaSAMember_019c6738-e571-7d8b-9cde-0f55c40fba2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_USAndCanadaFinanceJointVenturesMember_019c6738-e571-7a14-9577-bc8f5db45fea" xlink:href="agco-20260331.xsd#agco_USAndCanadaFinanceJointVenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019c6738-e571-74db-8188-e8477c4ccf75" xlink:to="loc_agco_USAndCanadaFinanceJointVenturesMember_019c6738-e571-7a14-9577-bc8f5db45fea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_019c6738-e571-797a-ba84-e6ffcaa32474" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsCurrentCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_019c6738-e571-72b3-a963-cddc41cf7c4c" xlink:to="loc_us-gaap_GuaranteeObligationsCurrentCarryingValue_019c6738-e571-797a-ba84-e6ffcaa32474" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_019c6738-e571-72af-9421-624d7d0a5edc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_019c6738-e571-72b3-a963-cddc41cf7c4c" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_019c6738-e571-72af-9421-624d7d0a5edc" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/RevenueRemainingPerformanceObligationsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#RevenueRemainingPerformanceObligationsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/RevenueRemainingPerformanceObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019c6738-e571-7e7d-ab04-d704f2eedd59" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019c6738-e571-7e7d-ab04-d704f2eedd59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_019c6738-e571-7c48-b089-cb3c623c9371" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019c6738-e571-7e7d-ab04-d704f2eedd59" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_019c6738-e571-7c48-b089-cb3c623c9371" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_019c6738-e571-7efb-a453-11894e7e9d0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_019c6738-e571-7efb-a453-11894e7e9d0d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019c6738-e571-7250-8a4e-922b65864bec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019c6738-e571-7250-8a4e-922b65864bec" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/RevenueRemainingPerformanceObligationsDetails_1" xlink:type="simple" xlink:href="agco-20260331.xsd#RevenueRemainingPerformanceObligationsDetails_1"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/RevenueRemainingPerformanceObligationsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019c6738-e571-7e7d-ab04-d704f2eedd59" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019c6738-e571-7e7d-ab04-d704f2eedd59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_019c6738-e571-7efb-a453-11894e7e9d0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_019c6738-e571-7efb-a453-11894e7e9d0d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019c6738-e571-7250-8a4e-922b65864bec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019c6738-e571-7d51-a2ef-f8be6ceba75a" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019c6738-e571-7250-8a4e-922b65864bec" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/RevenueDisaggregatedRevenueDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#RevenueDisaggregatedRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/RevenueDisaggregatedRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019c6738-e571-71df-95e8-927c6a6ca620" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019c6738-e571-7766-a884-0a4a43928df9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019c6738-e571-71df-95e8-927c6a6ca620" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019c6738-e571-7766-a884-0a4a43928df9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-74a7-b68b-10183cb245a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019c6738-e571-7766-a884-0a4a43928df9" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-74a7-b68b-10183cb245a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019c6738-e571-74a7-b68b-10183cb245a4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-74a7-b68b-10183cb245a4" xlink:to="loc_us-gaap_SegmentDomain_019c6738-e571-74a7-b68b-10183cb245a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019c6738-e571-70df-9102-575774b65b97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-74a7-b68b-10183cb245a4" xlink:to="loc_us-gaap_SegmentDomain_019c6738-e571-70df-9102-575774b65b97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_NorthAmericaSegmentMember_019c6738-e571-7f6c-ad46-edd050bfe7c0" xlink:href="agco-20260331.xsd#agco_NorthAmericaSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-70df-9102-575774b65b97" xlink:to="loc_agco_NorthAmericaSegmentMember_019c6738-e571-7f6c-ad46-edd050bfe7c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_LatinAmericaSegmentMember_019d8b2c-4cf4-7212-a1c0-e4f5366ece88" xlink:href="agco-20260331.xsd#agco_LatinAmericaSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-70df-9102-575774b65b97" xlink:to="loc_agco_LatinAmericaSegmentMember_019d8b2c-4cf4-7212-a1c0-e4f5366ece88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_EMESegmentMember_019c6738-e571-7bd2-aaa5-8173329fd8c3" xlink:href="agco-20260331.xsd#agco_EMESegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-70df-9102-575774b65b97" xlink:to="loc_agco_EMESegmentMember_019c6738-e571-7bd2-aaa5-8173329fd8c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_APASegmentMember_019c6738-e571-783d-b61b-780d964cfc4b" xlink:href="agco-20260331.xsd#agco_APASegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-70df-9102-575774b65b97" xlink:to="loc_agco_APASegmentMember_019c6738-e571-783d-b61b-780d964cfc4b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019c6738-e571-7447-b981-643a154c2f3d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019c6738-e571-7766-a884-0a4a43928df9" xlink:to="loc_srt_StatementGeographicalAxis_019c6738-e571-7447-b981-643a154c2f3d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e571-7447-b981-643a154c2f3d_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e571-7447-b981-643a154c2f3d" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e571-7447-b981-643a154c2f3d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019c6738-e571-7447-b981-643a154c2f3d" xlink:to="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019c6738-e571-79ce-b35f-4485a27d179a" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_country_US_019c6738-e571-79ce-b35f-4485a27d179a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019c6738-e571-72d6-96c7-59dc6597054b" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_country_CA_019c6738-e571-72d6-96c7-59dc6597054b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BR_019c6738-e571-7491-92ab-c61504b40abf" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_country_BR_019c6738-e571-7491-92ab-c61504b40abf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_OtherSouthAmericaMember_019c6738-e571-79e3-b9cd-00c4585c85cb" xlink:href="agco-20260331.xsd#agco_OtherSouthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_OtherSouthAmericaMember_019c6738-e571-79e3-b9cd-00c4585c85cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_DE_019c6738-e571-7eac-8782-c201f564df88" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_DE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_country_DE_019c6738-e571-7eac-8782-c201f564df88" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_FR_019c6738-e571-72a8-9914-26e2a2a71fe1" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_FR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_country_FR_019c6738-e571-72a8-9914-26e2a2a71fe1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_UnitedKingdomAndIrelandMember_019c6738-e571-719a-b0d6-c35f5d963783" xlink:href="agco-20260331.xsd#agco_UnitedKingdomAndIrelandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_UnitedKingdomAndIrelandMember_019c6738-e571-719a-b0d6-c35f5d963783" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_FinlandAndScandinaviaMember_019c6738-e571-79e6-bba3-2061aa0fd4d3" xlink:href="agco-20260331.xsd#agco_FinlandAndScandinaviaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_FinlandAndScandinaviaMember_019c6738-e571-79e6-bba3-2061aa0fd4d3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_IT_019c6738-e571-7ffa-81ca-ed9cef43a548" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_IT"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_country_IT_019c6738-e571-7ffa-81ca-ed9cef43a548" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_OtherEuropeMember_019c6738-e571-74fa-b924-98f2ba008f9c" xlink:href="agco-20260331.xsd#agco_OtherEuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_OtherEuropeMember_019c6738-e571-74fa-b924-98f2ba008f9c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_MiddleEastandAlgeriaMember_019c6738-e571-7de8-80c6-474d33da62c1" xlink:href="agco-20260331.xsd#agco_MiddleEastandAlgeriaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_MiddleEastandAlgeriaMember_019c6738-e571-7de8-80c6-474d33da62c1" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AfricaMember_019c6738-e571-7370-9ebe-274ad27868d1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_AfricaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_srt_AfricaMember_019c6738-e571-7370-9ebe-274ad27868d1" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AsiaMember_019c6738-e571-7fae-ad01-960985c4713f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_AsiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_srt_AsiaMember_019c6738-e571-7fae-ad01-960985c4713f" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_AustraliaAndNewZealandMember_019c6738-e571-7b2f-a382-0159afba40b1" xlink:href="agco-20260331.xsd#agco_AustraliaAndNewZealandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_AustraliaAndNewZealandMember_019c6738-e571-7b2f-a382-0159afba40b1" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_MexicoCentralAmericaAndCaribbeanMember_019c6738-e571-7792-a496-bf65b00c8338" xlink:href="agco-20260331.xsd#agco_MexicoCentralAmericaAndCaribbeanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019c6738-e571-79bf-8891-47da4f8937a1" xlink:to="loc_agco_MexicoCentralAmericaAndCaribbeanMember_019c6738-e571-7792-a496-bf65b00c8338" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019c6738-e571-7582-acbb-8127da59c8da" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019c6738-e571-7766-a884-0a4a43928df9" xlink:to="loc_srt_ProductOrServiceAxis_019c6738-e571-7582-acbb-8127da59c8da" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019c6738-e571-7582-acbb-8127da59c8da_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019c6738-e571-7582-acbb-8127da59c8da" xlink:to="loc_srt_ProductsAndServicesDomain_019c6738-e571-7582-acbb-8127da59c8da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019c6738-e571-75fc-9a22-726037209d96" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019c6738-e571-7582-acbb-8127da59c8da" xlink:to="loc_srt_ProductsAndServicesDomain_019c6738-e571-75fc-9a22-726037209d96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_TractorsMember_019c6738-e571-7071-a222-320ce6beb5d4" xlink:href="agco-20260331.xsd#agco_TractorsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019c6738-e571-75fc-9a22-726037209d96" xlink:to="loc_agco_TractorsMember_019c6738-e571-7071-a222-320ce6beb5d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ReplacementPartSalesMember_019c6738-e571-706f-8e55-adbe19131395" xlink:href="agco-20260331.xsd#agco_ReplacementPartSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019c6738-e571-75fc-9a22-726037209d96" xlink:to="loc_agco_ReplacementPartSalesMember_019c6738-e571-706f-8e55-adbe19131395" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_GrainStorageAndProteinProductionSystemsMember_019c6738-e571-7c2c-9efa-fa3f57c6e049" xlink:href="agco-20260331.xsd#agco_GrainStorageAndProteinProductionSystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019c6738-e571-75fc-9a22-726037209d96" xlink:to="loc_agco_GrainStorageAndProteinProductionSystemsMember_019c6738-e571-7c2c-9efa-fa3f57c6e049" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ApplicationEquipmentAndOtherMachineryProductLineMember_019c6738-e571-7984-8d58-f640da6f3bcf" xlink:href="agco-20260331.xsd#agco_ApplicationEquipmentAndOtherMachineryProductLineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019c6738-e571-75fc-9a22-726037209d96" xlink:to="loc_agco_ApplicationEquipmentAndOtherMachineryProductLineMember_019c6738-e571-7984-8d58-f640da6f3bcf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c6738-e571-7871-a2dd-c85b2b627d7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019c6738-e571-71df-95e8-927c6a6ca620" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c6738-e571-7871-a2dd-c85b2b627d7a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/SegmentReportingSegmentResultsByReportableSegmentsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#SegmentReportingSegmentResultsByReportableSegmentsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/SegmentReportingSegmentResultsByReportableSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019c6738-e571-7d1f-b8e3-49a099a70286" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019c6738-e571-7d1f-b8e3-49a099a70286" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019c6738-e571-7932-977d-27438d06cc55" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019c6738-e571-7d1f-b8e3-49a099a70286" xlink:to="loc_srt_ConsolidationItemsAxis_019c6738-e571-7932-977d-27438d06cc55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019c6738-e571-7932-977d-27438d06cc55_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019c6738-e571-7932-977d-27438d06cc55" xlink:to="loc_srt_ConsolidationItemsDomain_019c6738-e571-7932-977d-27438d06cc55_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019c6738-e571-7d63-b1f4-223a4cac313d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019c6738-e571-7932-977d-27438d06cc55" xlink:to="loc_srt_ConsolidationItemsDomain_019c6738-e571-7d63-b1f4-223a4cac313d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019c6738-e571-70a4-960f-a1090b08998a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019c6738-e571-7d63-b1f4-223a4cac313d" xlink:to="loc_us-gaap_OperatingSegmentsMember_019c6738-e571-70a4-960f-a1090b08998a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-7cd4-8c1f-b8cf63a58624" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019c6738-e571-7d1f-b8e3-49a099a70286" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-7cd4-8c1f-b8cf63a58624" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019c6738-e571-7cd4-8c1f-b8cf63a58624_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-7cd4-8c1f-b8cf63a58624" xlink:to="loc_us-gaap_SegmentDomain_019c6738-e571-7cd4-8c1f-b8cf63a58624_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019c6738-e571-7cd4-8c1f-b8cf63a58624" xlink:to="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_NorthAmericaSegmentMember_019c6738-e571-7c5f-a25b-d02546d84a27" xlink:href="agco-20260331.xsd#agco_NorthAmericaSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:to="loc_agco_NorthAmericaSegmentMember_019c6738-e571-7c5f-a25b-d02546d84a27" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_LatinAmericaSegmentMember_019d8b35-f2f6-77d3-92fd-e8a6f6ae2dd5" xlink:href="agco-20260331.xsd#agco_LatinAmericaSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:to="loc_agco_LatinAmericaSegmentMember_019d8b35-f2f6-77d3-92fd-e8a6f6ae2dd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_EMESegmentMember_019c6738-e571-7836-8f18-ef0cd5848db9" xlink:href="agco-20260331.xsd#agco_EMESegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:to="loc_agco_EMESegmentMember_019c6738-e571-7836-8f18-ef0cd5848db9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_APASegmentMember_019c6738-e571-7ecd-99f9-e91e034fab0f" xlink:href="agco-20260331.xsd#agco_APASegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:to="loc_agco_APASegmentMember_019c6738-e571-7ecd-99f9-e91e034fab0f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_ReportableSegmentMember_019c6738-e571-7502-a026-4c4538f2e9b9" xlink:href="agco-20260331.xsd#agco_ReportableSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019c6738-e571-7f24-806f-5bf42123e213" xlink:to="loc_agco_ReportableSegmentMember_019c6738-e571-7502-a026-4c4538f2e9b9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c6738-e571-7c4f-8aa0-070998ea870a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019c6738-e571-7c4f-8aa0-070998ea870a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019c6738-e571-7430-8fde-9f2ae0a7777f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019c6738-e571-7430-8fde-9f2ae0a7777f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_SellingGeneralAndAdministrativeExpenseAdjusted_019c6738-e571-782d-aa51-b2246ad10fde" xlink:href="agco-20260331.xsd#agco_SellingGeneralAndAdministrativeExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_agco_SellingGeneralAndAdministrativeExpenseAdjusted_019c6738-e571-782d-aa51-b2246ad10fde" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_EngineeringExpenses_019c6738-e571-78c7-861f-448888d269ec" xlink:href="agco-20260331.xsd#agco_EngineeringExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_agco_EngineeringExpenses_019c6738-e571-78c7-861f-448888d269ec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_agco_OperatingIncomeLossAdjusted_019c6738-e571-78e7-8f1a-5eacb4d4d013" xlink:href="agco-20260331.xsd#agco_OperatingIncomeLossAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_agco_OperatingIncomeLossAdjusted_019c6738-e571-78e7-8f1a-5eacb4d4d013" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_019c6738-e571-7dcf-ab72-285c0e24846a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_us-gaap_Depreciation_019c6738-e571-7dcf-ab72-285c0e24846a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_019c6738-e571-7e42-b13f-098322abbcb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentExpenditureAdditionToLongLivedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_019c6738-e571-7e42-b13f-098322abbcb6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019c6738-e571-7bd9-a429-df64c4e1a9cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019c6738-e571-7846-8525-80eeab7ef70c" xlink:to="loc_us-gaap_Assets_019c6738-e571-7bd9-a429-df64c4e1a9cd" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.agcocorp.com/role/SegmentReportingIncomeFromOperationsandTotalAssetsDetails" xlink:type="simple" xlink:href="agco-20260331.xsd#SegmentReportingIncomeFromOperationsandTotalAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.agcocorp.com/role/SegmentReportingIncomeFromOperationsandTotalAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_019c6738-e571-7b11-b931-6bf30ebba110" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_019c6738-e571-75dc-8594-c4201afa444d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_019c6738-e571-7b11-b931-6bf30ebba110" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_019c6738-e571-75dc-8594-c4201afa444d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019c6738-e571-7bb0-92cf-0e6168a9ba55" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_019c6738-e571-75dc-8594-c4201afa444d" xlink:to="loc_srt_ConsolidationItemsAxis_019c6738-e571-7bb0-92cf-0e6168a9ba55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019c6738-e571-7bb0-92cf-0e6168a9ba55_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019c6738-e571-7bb0-92cf-0e6168a9ba55" xlink:to="loc_srt_ConsolidationItemsDomain_019c6738-e571-7bb0-92cf-0e6168a9ba55_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019c6738-e571-7c8b-bf23-dafe17464135" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019c6738-e571-7bb0-92cf-0e6168a9ba55" xlink:to="loc_srt_ConsolidationItemsDomain_019c6738-e571-7c8b-bf23-dafe17464135" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019c6738-e571-7c50-84a0-d6b53589dd67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019c6738-e571-7c8b-bf23-dafe17464135" xlink:to="loc_us-gaap_OperatingSegmentsMember_019c6738-e571-7c50-84a0-d6b53589dd67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_019c6738-e571-750d-9fab-9087b82b46a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019c6738-e571-7c8b-bf23-dafe17464135" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_019c6738-e571-750d-9fab-9087b82b46a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_019c6738-e571-7b11-b931-6bf30ebba110" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019c6738-e571-77e5-b35e-f62b2349dff3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:to="loc_us-gaap_OperatingIncomeLoss_019c6738-e571-77e5-b35e-f62b2349dff3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_019c6738-e571-71c3-9bed-81278de12272" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_019c6738-e571-71c3-9bed-81278de12272" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019c6738-e571-720c-b9f4-bf299e2a9f6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019c6738-e571-720c-b9f4-bf299e2a9f6b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019c6738-e571-7ace-85a9-d906e730ec66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019c6738-e571-7ace-85a9-d906e730ec66" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_019c6738-e571-76b5-9be0-300629063b3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_019c6738-e571-76b5-9be0-300629063b3f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019c6738-e571-7b77-b2a0-c9b2013a5bab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedAbstract_019c6738-e571-7a17-bc43-2198d4bbd6b7" xlink:to="loc_us-gaap_RestructuringCharges_019c6738-e571-7b77-b2a0-c9b2013a5bab" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019c6738-e571-7264-8734-8cbdd8d5c143" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
  </link:definitionLink>
</link:linkbase>
