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>0001183850</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000106535</issuerCik>
        <issuerName>WEYERHAEUSER CO</issuerName>
        <secFileNumber>001-04825</secFileNumber>
        <issuerAddress>
          <com:street1>220 OCCIDENTAL AVENUE SOUTH</com:street1>
          <com:city>SEATTLE</com:city>
          <com:stateOrCountry>WA</com:stateOrCountry>
          <com:zipCode>98104</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>206-539-3000</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>PIASECKI NICOLE WEYERHAEUSER</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>245 Summer Street</com:street1>
            <com:city>Boston</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02110</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>5776</noOfUnitsSold>
        <aggregateMarketValue>169814.40</aggregateMarketValue>
        <noOfUnitsOutstanding>729017000</noOfUnitsOutstanding>
        <approxSaleDate>06/07/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <acquiredDate>05/09/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>WEYERHAEUSER COMPANY</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>5776</amountOfSecuritiesAcquired>
        <paymentDate>05/09/2024</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Gregory W. Piasecki Estate Trust</name>
          <address>
            <com:street1>c/o WEYERHAEUSER COMPANY</com:street1>
            <com:street2>220 OCCIDENTAL AVENUE SOUTH</com:street2>
            <com:city>SEATTLE</com:city>
            <com:stateOrCountry>WA</com:stateOrCountry>
            <com:zipCode>98104</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <saleDate>03/13/2024</saleDate>
        <amountOfSecuritiesSold>13592</amountOfSecuritiesSold>
        <grossProceeds>468039.16</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>06/07/2024</noticeDate>
        <signature>/s/ Myra King, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Nicole W. Piasecki</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001183850
  XXXXXXXX
  LIVE
  0000106535
  WEYERHAEUSER CO
  001-04825
  220 OCCIDENTAL AVENUE SOUTH
  SEATTLE
  WA
  98104
  206-539-3000
  PIASECKI NICOLE WEYERHAEUSER
  Director
  Common Shares
  Fidelity Brokerage Services LLC
  245 Summer Street
  Boston
  MA
  02110
  5776
  169814.40
  729017000
  06/07/2024
  NYSE
  Common Shares
  05/09/2024
  Stock Award
  WEYERHAEUSER COMPANY
  N
  5776
  05/09/2024
  N/A
  N
  Gregory W. Piasecki Estate Trust
  c/o WEYERHAEUSER COMPANY
  220 OCCIDENTAL AVENUE SOUTH
  SEATTLE
  WA
  98104
  Common Shares
  03/13/2024
  13592
  468039.16
  06/07/2024
  /s/ Myra King, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Nicole W. Piasecki