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

<!-- Generated by Broadridge Financial Solutions Inc -->
<xs:schema targetNamespace="http://abf/20250601" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:abf="http://abf/20250601" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:us-types="http://xbrl.us/us-types/2009-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:rr="http://xbrl.sec.gov/rr/2023" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dei="http://xbrl.sec.gov/dei/2023">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="abf-20250601_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="abf-20250601_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="abf-20250601_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/>
      <link:roleType roleURI="http://abf/role/DocumentDocumentandEntityInformation" id="DocumentDocumentandEntityInformation">
        <link:definition>010001 - Document - Document And Entity Information {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/Dabniscoreplusbondfundfyepro_2641" id="Dabniscoreplusbondfundfyepro_2641">
        <link:definition>0100012 - Document - American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6 {Unlabeled}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/RiskReturnDetailDataDabniscoreplusbondfundfyepro_2641" id="RiskReturnDetailDataDabniscoreplusbondfundfyepro_2641">
        <link:definition>0100013 - Document - RiskReturnDetailData American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6 {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/Dabniscoreplusbondfundfyesai_2640" id="Dabniscoreplusbondfundfyesai_2640">
        <link:definition>0100023 - Document - AB NIS Core Plus Bond Fund_FYE_01_31_SAI {Unlabeled}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/RiskReturnDetailDataDabniscoreplusbondfundfyesai_2640" id="RiskReturnDetailDataDabniscoreplusbondfundfyesai_2640">
        <link:definition>0100024 - Document - RiskReturnDetailData AB NIS Core Plus Bond Fund_FYE_01_31_SAI {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/Dabdevelopingworldincomefundfyepro_2637" id="Dabdevelopingworldincomefundfyepro_2637">
        <link:definition>0100034 - Document - American Beacon Developing World Income Fund - Classes A, C, Y, R5 and Investor {Unlabeled}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/RiskReturnDetailDataDabdevelopingworldincomefundfyepro_2637" id="RiskReturnDetailDataDabdevelopingworldincomefundfyepro_2637">
        <link:definition>0100035 - Document - RiskReturnDetailData American Beacon Developing World Income Fund - Classes A, C, Y, R5 and Investor {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/Dabdevelopingworldincomefundfyesai_2639" id="Dabdevelopingworldincomefundfyesai_2639">
        <link:definition>0100045 - Document - AB Developing World Income Fund_FYE_01_31_SAI {Unlabeled}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://abf/role/RiskReturnDetailDataDabdevelopingworldincomefundfyesai_2639" id="RiskReturnDetailDataDabdevelopingworldincomefundfyesai_2639">
        <link:definition>0100046 - Document - RiskReturnDetailData AB Developing World Income Fund_FYE_01_31_SAI {Elements}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/rr/2023" schemaLocation="https://xbrl.sec.gov/rr/2023/rr-2023.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2023" schemaLocation="https://xbrl.sec.gov/dei/2023/dei-2023.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:element name="Dabniscoreplusbondfundfyepro_2641Member" id="abf_Dabniscoreplusbondfundfyepro_2641Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="Dabniscoreplusbondfundfyesai_2640Member" id="abf_Dabniscoreplusbondfundfyesai_2640Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="Dabdevelopingworldincomefundfyepro_2637Member" id="abf_Dabdevelopingworldincomefundfyepro_2637Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="Dabdevelopingworldincomefundfyesai_2639Member" id="abf_Dabdevelopingworldincomefundfyesai_2639Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="S000069392Member" id="abf_S000069392Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="S000044050Member" id="abf_S000044050Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000221417Member" id="abf_C000221417Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000221418Member" id="abf_C000221418Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000221416Member" id="abf_C000221416Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000221415Member" id="abf_C000221415Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000136710Member" id="abf_C000136710Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000136711Member" id="abf_C000136711Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000136714Member" id="abf_C000136714Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000136712Member" id="abf_C000136712Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000136713Member" id="abf_C000136713Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20240514206Member" id="abf_bench20240514206Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407123Member" id="abf_bench20230407123Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512162Member" id="abf_bench20230512162Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512163Member" id="abf_bench20230512163Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512164Member" id="abf_bench20230512164Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407126Member" id="abf_bench20230407126Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407127Member" id="abf_bench20230407127Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407101Member" id="abf_bench20230407101Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512165Member" id="abf_bench20230512165Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407120Member" id="abf_bench20230407120Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407132Member" id="abf_bench20230407132Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407153Member" id="abf_bench20230407153Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407133Member" id="abf_bench20230407133Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407106Member" id="abf_bench20230407106Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407107Member" id="abf_bench20230407107Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407135Member" id="abf_bench20230407135Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512167Member" id="abf_bench20230512167Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407109Member" id="abf_bench20230407109Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512168Member" id="abf_bench20230512168Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512169Member" id="abf_bench20230512169Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407112Member" id="abf_bench20230407112Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512170Member" id="abf_bench20230512170Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512171Member" id="abf_bench20230512171Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407114Member" id="abf_bench20230407114Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512172Member" id="abf_bench20230512172Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407117Member" id="abf_bench20230407117Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512173Member" id="abf_bench20230512173Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512174Member" id="abf_bench20230512174Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407158Member" id="abf_bench20230407158Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407148Member" id="abf_bench20230407148Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407149Member" id="abf_bench20230407149Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench2023021792Member" id="abf_bench2023021792Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407129Member" id="abf_bench20230407129Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407130Member" id="abf_bench20230407130Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512175Member" id="abf_bench20230512175Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407102Member" id="abf_bench20230407102Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512166Member" id="abf_bench20230512166Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407152Member" id="abf_bench20230407152Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407131Member" id="abf_bench20230407131Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407154Member" id="abf_bench20230407154Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407134Member" id="abf_bench20230407134Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407137Member" id="abf_bench20230407137Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512177Member" id="abf_bench20230512177Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512178Member" id="abf_bench20230512178Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407141Member" id="abf_bench20230407141Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512179Member" id="abf_bench20230512179Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230512180Member" id="abf_bench20230512180Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407159Member" id="abf_bench20230407159Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20230407151Member" id="abf_bench20230407151Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench20240416204Member" id="abf_bench20240416204Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="bench2022051685Member" id="abf_bench2022051685Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
</xs:schema>
