<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0000820478-19-000034</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0000820478</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>5</amendmentNo>
      <securitiesClassTitle>common stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>12/31/2023</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001476765</issuerCik>
        <issuerName>GOLUB CAPITAL BDC, Inc.</issuerName>
        <issuerCusip>38173M102</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>200 PARK AVENUE</com:street1>
          <com:street2>200 PARK AVENUE</com:street2>
          <com:city>NEW YORK</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10166</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>STRS OHIO</reportingPersonName>
      <citizenshipOrOrganization>OH</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>9302722.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>9302722.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>9302722.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>5.5</classPercent>
      <typeOfReportingPerson>EP</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>GOLUB CAPITAL BDC, Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>200 PARK AVENUE, 200 PARK AVENUE, NEW YORK, NEW YORK, 10166.</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>State Teachers Retirement System of Ohio</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>275 East Broad Street, Columbus Ohio 43215</principalBusinessOfficeOrResidenceAddress>
        <citizenship>N/A</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>EP</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>9,302,722</amountBeneficiallyOwned>
        <classPercent>5.5</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>9,302,722</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>9,3302,722</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>N</notApplicableFlag>
        <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under &amp;#167; 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>STRS OHIO</reportingPersonName>
      <signatureDetails>
        <signature>Matthew Worley</signature>
        <title>Deputy Executive Director, Investments</title>
        <date>01/11/2024</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
