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        <credentials>
          <cik>0001534866</cik>
          <ccc>XXXXXXXX</ccc>
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      <periodOfReport>03-31-2026</periodOfReport>
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      <reportCalendarOrQuarter>03-31-2026</reportCalendarOrQuarter>
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        <name>Boston Trust Walden Corp</name>
        <address>
          <com:street1>ONE BEACON STREET, 34TH FLOOR</com:street1>
          <com:city>BOSTON</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02108</com:zipCode>
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          <name>ABN AMRO INVESTMENT SOLUTIONS</name>
        </otherManager>
      </otherManagersInfo>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>ABN AMRO INVESTMENT SOLUTIONS
Form 13F File Number: 028-25693
Central Index Key (CIK) number: 0002080520
CIK Confirmation Code (CCC) number: byMC9@9G</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Jon Eng</name>
      <title>Director of Operations </title>
      <phone>617-726-7275</phone>
      <signature>Jon Eng</signature>
      <city>Boston</city>
      <stateOrCountry>MA</stateOrCountry>
      <signatureDate>04-24-2026</signatureDate>
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