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  <xs:element id="amg_EquityMethodInvestmentOtherIncreaseDecrease" abstract="false" name="EquityMethodInvestmentOtherIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_UnrecognizedAffiliateEquityExpenseAbstract" abstract="true" name="UnrecognizedAffiliateEquityExpenseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_ScheduleOfIntangibleAssetsByMajorClassTableTextBlock" abstract="false" name="ScheduleOfIntangibleAssetsByMajorClassTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amg_DeferredTaxLiabilitiesConvertibleSecuritiesInterest" abstract="false" name="DeferredTaxLiabilitiesConvertibleSecuritiesInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_RealizedAndUnrealizedInvestmentGainsLosses" abstract="false" name="RealizedAndUnrealizedInvestmentGainsLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_OtherInvestmentsPurchases" abstract="false" name="OtherInvestmentsPurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_PaymentsForAchievementOfFinancialTargetsMember" abstract="true" name="PaymentsForAchievementOfFinancialTargetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_SeniorUnsecuredCreditFacilityRevolverMember" abstract="true" name="SeniorUnsecuredCreditFacilityRevolverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_SharesReceivedForSettlementOfAcceleratedShareRepurchaseAgreementValue" abstract="false" name="SharesReceivedForSettlementOfAcceleratedShareRepurchaseAgreementValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_DepreciationAndOtherAmortization" abstract="false" name="DepreciationAndOtherAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_EquitySecuritiesWithoutReadilyDeterminableFairValueCost" abstract="false" name="EquitySecuritiesWithoutReadilyDeterminableFairValueCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_OperatingLossCarryforwardsForeignNotSubjectToExpiration" abstract="false" name="OperatingLossCarryforwardsForeignNotSubjectToExpiration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceConditionChangesWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceConditionChangesWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="amg_ExcessTaxBenefitDeficiencyFromShareBasedCompensation" abstract="false" name="ExcessTaxBenefitDeficiencyFromShareBasedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_NetIncomeLossOtherNoncontrollingInterestsRedeemable" abstract="false" name="NetIncomeLossOtherNoncontrollingInterestsRedeemable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_FiniteLivedIntangibleAssetsAccumulatedAmortizationTransfers" abstract="false" name="FiniteLivedIntangibleAssetsAccumulatedAmortizationTransfers" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_IntangibleAmortizationAndImpairmentsMember" abstract="true" name="IntangibleAmortizationAndImpairmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_AffiliateEquityLineItems" abstract="true" name="AffiliateEquityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_MeasurementInputGrowthRateMember" abstract="true" name="MeasurementInputGrowthRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_NoncontrollingInterestDecreaseFromAffiliateTransaction" abstract="false" name="NoncontrollingInterestDecreaseFromAffiliateTransaction" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_DeferredTaxAssetsTaxCreditCarryforwardsForeignExpirationPeriod" abstract="false" name="DeferredTaxAssetsTaxCreditCarryforwardsForeignExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="amg_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAttributableToParent" abstract="false" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesAttributableToParent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLossBeforeAdjustmentOnAccumulatedAmortization" abstract="false" name="FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLossBeforeAdjustmentOnAccumulatedAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_IndefiniteLivedIntangibleAssetsTransfers" abstract="false" name="IndefiniteLivedIntangibleAssetsTransfers" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_ObligationsToRelatedPartiesMember" abstract="true" name="ObligationsToRelatedPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_SaleOfEquityInterestEquityInterestIssuablePercentageOfSharesRestricted" abstract="false" name="SaleOfEquityInterestEquityInterestIssuablePercentageOfSharesRestricted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="amg_FiniteLivedIntangibleAssetsGrossTransfers" abstract="false" name="FiniteLivedIntangibleAssetsGrossTransfers" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_ReductionToCashDueToDeconsolidationOfAffiliatesAndAffiliateSponsoredInvestmentProducts" abstract="false" name="ReductionToCashDueToDeconsolidationOfAffiliatesAndAffiliateSponsoredInvestmentProducts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_FiniteLivedIntangibleAssetAccumulatedAmortizationForeignCurrencyTranslation" abstract="false" name="FiniteLivedIntangibleAssetAccumulatedAmortizationForeignCurrencyTranslation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_IntangibleAssetsTransfers" abstract="false" name="IntangibleAssetsTransfers" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_ForwardEquityAgreementMember" abstract="true" name="ForwardEquityAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_InvestmentAndOtherIncomeLoss" abstract="false" name="InvestmentAndOtherIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_PaymentsForContingentFinancingMember" abstract="true" name="PaymentsForContingentFinancingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="amg_PayablesRecordedButNotYetPaidShareRepurchases" abstract="false" name="PayablesRecordedButNotYetPaidShareRepurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_DeferredPaymentObligationsLiabilityToBePaidYearTwo" abstract="false" name="DeferredPaymentObligationsLiabilityToBePaidYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_MeasurementInputDiscountRateAssetBasedFeesMember" abstract="true" name="MeasurementInputDiscountRateAssetBasedFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_ProceedsFromPaymentsForAffiliateEquityIssuancesAndRepurchases" abstract="false" name="ProceedsFromPaymentsForAffiliateEquityIssuancesAndRepurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliatesNetOfTransactionCosts" abstract="false" name="ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliatesNetOfTransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_VariableInterestEntitiesDisclosureTextBlock" abstract="false" name="VariableInterestEntitiesDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amg_SaleOfEquityInterestsProceedsFromOtherInvestments" abstract="false" name="SaleOfEquityInterestsProceedsFromOtherInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_GoodwillDeconsolidated" abstract="false" name="GoodwillDeconsolidated" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_CommitmentAndContingenciesLineItems" abstract="true" name="CommitmentAndContingenciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_TermOfConditionalRighttoPutInterest" abstract="false" name="TermOfConditionalRighttoPutInterest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="amg_OtherInvestmentsRollForward" abstract="true" name="OtherInvestmentsRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_VariableInterestEntitiesDisclosureAbstract" abstract="true" name="VariableInterestEntitiesDisclosureAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_IntangibleAssetLineItems" abstract="true" name="IntangibleAssetLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_NoncontrollingInterestIncreaseDecreasefromPurchaseofInterests" abstract="false" name="NoncontrollingInterestIncreaseDecreasefromPurchaseofInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_EquitySecuritiesWithoutReadilyDeterminableFairValuePurchasesAndCommitments" abstract="false" name="EquitySecuritiesWithoutReadilyDeterminableFairValuePurchasesAndCommitments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_SaleofSecuritiesbyAffiliateSponsoredConsolidatedProducts" abstract="false" name="SaleofSecuritiesbyAffiliateSponsoredConsolidatedProducts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsPerformanceConditionChangesWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsPerformanceConditionChangesWeightedAverageExercisePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="amg_BuildingAndLeaseholdImprovementsMember" abstract="true" name="BuildingAndLeaseholdImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_AccumulatedOtherComprehensiveIncomeLossAttributableToParentNetOfTax" abstract="false" name="AccumulatedOtherComprehensiveIncomeLossAttributableToParentNetOfTax" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_SummaryofOtherFinancialLiabilitiesNotCarriedatFairValueTableTextBlock" abstract="false" name="SummaryofOtherFinancialLiabilitiesNotCarriedatFairValueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amg_NumberOfAffiliatesEquityMethodInvestment" abstract="false" name="NumberOfAffiliatesEquityMethodInvestment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="amg_LiabilitiesAndNoncontrollingInterests" abstract="false" name="LiabilitiesAndNoncontrollingInterests" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_CommitmentAndContingenciesTable" abstract="true" name="CommitmentAndContingenciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="amg_IncomeLossfromEquityMethodInvestmentsBeforeAmortizationofIntangibles" abstract="false" name="IncomeLossfromEquityMethodInvestmentsBeforeAmortizationofIntangibles" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_PayablesRecordedButNotYetPaidInvestmentsInAffiliates" abstract="false" name="PayablesRecordedButNotYetPaidInvestmentsInAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AmortizationAndImpairmentsOfIntangibleAssets" abstract="false" name="AmortizationAndImpairmentsOfIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_OtherCommitmentToBePaidYearTwoThroughSix" abstract="false" name="OtherCommitmentToBePaidYearTwoThroughSix" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_DeferredTaxAssetsOperatingLeaseLiability" abstract="false" name="DeferredTaxAssetsOperatingLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_EquitySecuritiesWithoutReadilyDeterminableFairValueSalesAndDistributions" abstract="false" name="EquitySecuritiesWithoutReadilyDeterminableFairValueSalesAndDistributions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_EquityMethodInvestmentMeasurementInput" abstract="false" name="EquityMethodInvestmentMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="amg_AdjustmentsToAdditionalPaidInCapitalDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_EQTABEQTMember" abstract="true" name="EQTABEQTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_EquityMethodInvestmentIntangibleAssetAmortizationAndImpairments" abstract="false" name="EquityMethodInvestmentIntangibleAssetAmortizationAndImpairments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_IntangibleAssetsDeconsolidatedExcludingGoodwill" abstract="false" name="IntangibleAssetsDeconsolidatedExcludingGoodwill" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_NoncontrollingInterestIncreaseDecreaseFromContributionsFromAffiliateAndOther" abstract="false" name="NoncontrollingInterestIncreaseDecreaseFromContributionsFromAffiliateAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_DeferredPaymentObligationsLiabilityDueAbstract" abstract="true" name="DeferredPaymentObligationsLiabilityDueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_SettlementOfRedeemableNonControllingInterestsSharesIssued" abstract="false" name="SettlementOfRedeemableNonControllingInterestsSharesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="amg_AcceleratedShareRepurchaseStockRepurchasedDuringPeriodShares" abstract="false" name="AcceleratedShareRepurchaseStockRepurchasedDuringPeriodShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="amg_ChangeinEquityMethodInvestmentsinAffiliatesRollForward" abstract="true" name="ChangeinEquityMethodInvestmentsinAffiliatesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_FourPointSevenFivePercentJuniorSubordinatedNotesDue2060Member" abstract="true" name="FourPointSevenFivePercentJuniorSubordinatedNotesDue2060Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_DebtInstrumentMakeWholePremiumDiscountRateBasisSpreadOnVariableRate" abstract="false" name="DebtInstrumentMakeWholePremiumDiscountRateBasisSpreadOnVariableRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="amg_CoinvestorMember" abstract="true" name="CoinvestorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_NoncontrollingInterestTransfersToFromNoncontrollingInterestHolders" abstract="false" name="NoncontrollingInterestTransfersToFromNoncontrollingInterestHolders" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AffiliateEquityCompensationExpenseIncludingPortionAttributableToNoncontrollingInterest" abstract="false" name="AffiliateEquityCompensationExpenseIncludingPortionAttributableToNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AffiliateEquityTable" abstract="true" name="AffiliateEquityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="amg_NoncontrollingInterestDecreasefromTransferstoOtherLiabilities" abstract="false" name="NoncontrollingInterestDecreasefromTransferstoOtherLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_SharesIssuableToSettleRedeemableNonControllingInterestsMember" abstract="true" name="SharesIssuableToSettleRedeemableNonControllingInterestsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_DeferredTaxLiabilitiesNetDecreaseResultingFromRepurchaseOfDebt" abstract="false" name="DeferredTaxLiabilitiesNetDecreaseResultingFromRepurchaseOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_FiniteLivedIntangibleAssetsDeconsolidatedGross" abstract="false" name="FiniteLivedIntangibleAssetsDeconsolidatedGross" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_DeferredPaymentObligationsLiability" abstract="false" name="DeferredPaymentObligationsLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AdjustmentsToAdditionalPaidInCapitalIncreaseDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalIncreaseDecreaseInCarryingAmountOfRedeemableNoncontrollingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_SaleOfEquityInterestsEquityInterestIssuableTermOfRestrictedShares" abstract="false" name="SaleOfEquityInterestsEquityInterestIssuableTermOfRestrictedShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="amg_ThirdPartyMember" abstract="true" name="ThirdPartyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="amg_VariableInterestEntityAbstract" abstract="true" name="VariableInterestEntityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_InvestmentCommitmentAmount" abstract="false" name="InvestmentCommitmentAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_MeasurementInputDiscountRatePerformanceBasedFeesMember" abstract="true" name="MeasurementInputDiscountRatePerformanceBasedFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_DeferredPaymentObligationsLiabilityToBePaidYearOne" abstract="false" name="DeferredPaymentObligationsLiabilityToBePaidYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_SummaryOfAffiliateEquityCompensationTableTextBlock" abstract="false" name="SummaryOfAffiliateEquityCompensationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amg_OperatingLossCarryforwardsForeignExpirationPeriod" abstract="false" name="OperatingLossCarryforwardsForeignExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="amg_DeferredTaxLiabilitiesNondeductibleIntangibleAssetsAmortization" abstract="false" name="DeferredTaxLiabilitiesNondeductibleIntangibleAssetsAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_MeasurementInputGrowthRatePeriodMember" abstract="true" name="MeasurementInputGrowthRatePeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_MeasurementInputMarketParticipantTaxRatesMember" abstract="true" name="MeasurementInputMarketParticipantTaxRatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_TreasuryRateMember" abstract="true" name="TreasuryRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amg_AffiliateEquityDisclosureAbstract" abstract="true" name="AffiliateEquityDisclosureAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_ContingentConsiderationLiabilityToBePaidYearTwo" abstract="false" name="ContingentConsiderationLiabilityToBePaidYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AffiliateEquityTextBlock" abstract="false" name="AffiliateEquityTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amg_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsAndOtherComprehensiveIncomeLoss" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsAndOtherComprehensiveIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AcceleratedShareRepurchaseUpfrontPayment" abstract="false" name="AcceleratedShareRepurchaseUpfrontPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_UnrecognizedTaxBenefitsIncreaseDecreaseRelatedtoForeignExchangeRates" abstract="false" name="UnrecognizedTaxBenefitsIncreaseDecreaseRelatedtoForeignExchangeRates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_SettlementOfDeferredPaymentObligations" abstract="false" name="SettlementOfDeferredPaymentObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AffiliateEquityAbstract" abstract="true" name="AffiliateEquityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amg_PayablesRecordedForAffiliateEquityPurchases" abstract="false" name="PayablesRecordedForAffiliateEquityPurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_StockIssuableValueMaximum" abstract="false" name="StockIssuableValueMaximum" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_CommonStockVotingRightsPercent" abstract="false" name="CommonStockVotingRightsPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="amg_DeferredIncomeTaxExpenseRelatedToIntangibles" abstract="false" name="DeferredIncomeTaxExpenseRelatedToIntangibles" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_AffiliateEquityUnrecognizedCompensationExpenseAttributableToNoncontrollingInterest" abstract="false" name="AffiliateEquityUnrecognizedCompensationExpenseAttributableToNoncontrollingInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amg_EquityMethodInvestmentRealizedGainLossOnForeignCurrencyTranslation" abstract="false" name="EquityMethodInvestmentRealizedGainLossOnForeignCurrencyTranslation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
