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  <xs:element id="amgn_SaleOfEquitySecuritiesFVNIUnrealizedGainLoss" abstract="false" name="SaleOfEquitySecuritiesFVNIUnrealizedGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amgn_NatureOfOperationsPolicyTextBlock" abstract="false" name="NatureOfOperationsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amgn_A560NotesDue2043Member" abstract="true" name="A560NotesDue2043Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_DerivativeAssetsFairValueDisclosureAbstract" abstract="true" name="DerivativeAssetsFairValueDisclosureAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="amgn_AccumulatedOtherAdjustmentAttributabletoParentMember" abstract="true" name="AccumulatedOtherAdjustmentAttributabletoParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_AvailableForSalesInvestmentsMember" abstract="true" name="AvailableForSalesInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_OnePointSixFivePercent2028NotesMember" abstract="true" name="OnePointSixFivePercent2028NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_A5507NotesDue2026Member" abstract="true" name="A5507NotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_NumberOfNoticesOnProposedAdditionalTax" abstract="false" name="NumberOfNoticesOnProposedAdditionalTax" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="amgn_TwoPointEightZeroPercent2041NotesMember" abstract="true" name="TwoPointEightZeroPercent2041NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherAssetsLiabilities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amgn_A2.00SeniorNotesDue2026Member" abstract="true" name="A2.00SeniorNotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_TEPEZZAMember" abstract="true" name="TEPEZZAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="amgn_NplateMember" abstract="true" name="NplateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_FourPointNineFivePercentNotesDue2041Member" abstract="true" name="FourPointNineFivePercentNotesDue2041Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_FivePointSixFivePercentNotesDue2042Member" abstract="true" name="FivePointSixFivePercentNotesDue2042Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_BeiGeneMember" abstract="true" name="BeiGeneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_FivePointOneFivePercentNotesDue2041Member" abstract="true" name="FivePointOneFivePercentNotesDue2041Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_AlternativeInvestmentNetGainLoss" abstract="false" name="AlternativeInvestmentNetGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amgn_A4202052NotesMember" abstract="true" name="A4202052NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_ScheduleOfNotionalAmountsAndInterestRatesForCrossCurrencySwapsTableTextBlock" abstract="false" name="ScheduleOfNotionalAmountsAndInterestRatesForCrossCurrencySwapsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amgn_TEZSPIREMember" abstract="true" name="TEZSPIREMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="amgn_TwoPointZeroPercent2032NotesMemberMember" abstract="true" name="TwoPointZeroPercent2032NotesMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_TwoPointTwoZeroPercentNotesDueTwoZeroTwoSevenMember" abstract="true" name="TwoPointTwoZeroPercentNotesDueTwoZeroTwoSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_NeumoraTherapeuticsIncMember" abstract="true" name="NeumoraTherapeuticsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_OtherShortTermInterestBearingSecuritiesMember" abstract="true" name="OtherShortTermInterestBearingSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_AmgenInc.Vs.CelltrionIncMember" abstract="true" name="AmgenInc.Vs.CelltrionIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="amgn_EVENITYMember" abstract="true" name="EVENITYMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_A2.00NotesDue2026Member" abstract="true" name="A2.00NotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_TermLoanDueOctober2026Member" abstract="true" name="TermLoanDueOctober2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="amgn_OtherComprehensiveIncomeLossOtherAdjustmentbeforeTax" abstract="false" name="OtherComprehensiveIncomeLossOtherAdjustmentbeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amgn_EnbrelMember" abstract="false" name="EnbrelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_OtherCurrentNoncurrentAssetsMember" abstract="true" name="OtherCurrentNoncurrentAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_NumberOfSecuritiesCasesFiled" abstract="false" name="NumberOfSecuritiesCasesFiled" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="amgn_BasisOfPresentationPolicyTextBlock" abstract="false" name="BasisOfPresentationPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="amgn_OtezlaMember" abstract="true" name="OtezlaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_NumberOfNoticesConsolidated" abstract="false" name="NumberOfNoticesConsolidated" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="amgn_OtherGeneralExpenseIncomeOtherAdjustments" abstract="false" name="OtherGeneralExpenseIncomeOtherAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="amgn_AcquiredResearchAndDevelopmentTechnologyRightsMember" abstract="true" name="AcquiredResearchAndDevelopmentTechnologyRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="amgn_A4052029NotesMember" abstract="true" name="A4052029NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
