content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001802461</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001061630</issuerCik>
        <issuerName>BLACKSTONE MORTGAGE TRUST, INC.</issuerName>
        <secFileNumber>001-14788</secFileNumber>
        <issuerAddress>
          <com:street1>345 PARK AVENUE</com:street1>
          <com:street2>24TH FLOOR</com:street2>
          <com:city>NEW YORK</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10154</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>2126550220</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Keenan Katharine A</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Merrill Lynch</name>
          <address>
            <com:street1>225 Liberty St</com:street1>
            <com:street2>Floor 37</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10281</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>2327</noOfUnitsSold>
        <aggregateMarketValue>44015.21</aggregateMarketValue>
        <noOfUnitsOutstanding>171580190</noOfUnitsOutstanding>
        <approxSaleDate>05/30/2025</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <acquiredDate>05/29/2025</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of restricted stock unit award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>BLACKSTONE MORTGAGE TRUST, INC.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2327</amountOfSecuritiesAcquired>
        <paymentDate>05/29/2025</paymentDate>
        <natureOfPayment>Granted as part of issuer equity compensation plan</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Katharine Keenan</name>
          <address>
            <com:street1>345 PARK AVENUE</com:street1>
            <com:street2>24TH FLOOR</com:street2>
            <com:city>NEW YORK</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10154</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <saleDate>03/03/2025</saleDate>
        <amountOfSecuritiesSold>2323</amountOfSecuritiesSold>
        <grossProceeds>48086.10</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Katharine Keenan</name>
          <address>
            <com:street1>345 PARK AVENUE</com:street1>
            <com:street2>24TH FLOOR</com:street2>
            <com:city>NEW YORK</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10154</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <saleDate>03/17/2025</saleDate>
        <amountOfSecuritiesSold>2315</amountOfSecuritiesSold>
        <grossProceeds>47912.75</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>05/30/2025</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>08/08/2024</planAdoptionDate>
        </planAdoptionDates>
        <signature>Katharine Keenan</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4358}]
text: 144
  0001802461
  XXXXXXXX
  LIVE
  0001061630
  BLACKSTONE MORTGAGE TRUST, INC.
  001-14788
  345 PARK AVENUE
  24TH FLOOR
  NEW YORK
  NY
  10154
  2126550220
  Keenan Katharine A
  Officer
  Director
  Class A common stock
  Merrill Lynch
  225 Liberty St
  Floor 37
  New York
  NY
  10281
  2327
  44015.21
  171580190
  05/30/2025
  NYSE
  Class A common stock
  05/29/2025
  Vesting of restricted stock unit award
  BLACKSTONE MORTGAGE TRUST, INC.
  N
  2327
  05/29/2025
  Granted as part of issuer equity compensation plan
  N
  Katharine Keenan
  345 PARK AVENUE
  24TH FLOOR
  NEW YORK
  NY
  10154
  Class A common stock
  03/03/2025
  2323
  48086.10
  Katharine Keenan
  345 PARK AVENUE
  24TH FLOOR
  NEW YORK
  NY
  10154
  Class A common stock
  03/17/2025
  2315
  47912.75
  05/30/2025
  08/08/2024
  Katharine Keenan