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>13592</noOfUnitsSold>
        <aggregateMarketValue>473545.28</aggregateMarketValue>
        <noOfUnitsOutstanding>729521000</noOfUnitsOutstanding>
        <approxSaleDate>03/11/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <acquiredDate>06/13/1983</acquiredDate>
        <natureOfAcquisitionTransaction>Gift</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Mother</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3165</amountOfSecuritiesAcquired>
        <paymentDate>06/13/1983</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <acquiredDate>12/31/1986</acquiredDate>
        <natureOfAcquisitionTransaction>Trust Termination</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Trust Termination</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>4842</amountOfSecuritiesAcquired>
        <paymentDate>12/31/1986</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <acquiredDate>09/17/1996</acquiredDate>
        <natureOfAcquisitionTransaction>Gift</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Mother</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>415</amountOfSecuritiesAcquired>
        <paymentDate>09/17/1996</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <acquiredDate>12/10/1999</acquiredDate>
        <natureOfAcquisitionTransaction>Gift</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Mother's Trust</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>305</amountOfSecuritiesAcquired>
        <paymentDate>12/10/1999</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Shares</securitiesClassTitle>
        <acquiredDate>09/01/2010</acquiredDate>
        <natureOfAcquisitionTransaction>Merger/Acquisition</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>REIT CONVERSION</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>4865</amountOfSecuritiesAcquired>
        <paymentDate>09/01/2010</paymentDate>
        <natureOfPayment>N/A</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Nicole W. Piasecki</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>02/23/2024</saleDate>
        <amountOfSecuritiesSold>33426</amountOfSecuritiesSold>
        <grossProceeds>1124326.96</grossProceeds>
      </securitiesSoldInPast3Months>
      <remarks>Shares are being sold from Gregory W. Piasecki Estate Trust.</remarks>
      <noticeSignature>
        <noticeDate>03/11/2024</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>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 5697}]
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
  13592
  473545.28
  729521000
  03/11/2024
  NYSE
  Common Shares
  06/13/1983
  Gift
  Mother
  N
  3165
  06/13/1983
  N/A
  Common Shares
  12/31/1986
  Trust Termination
  Trust Termination
  N
  4842
  12/31/1986
  N/A
  Common Shares
  09/17/1996
  Gift
  Mother
  N
  415
  09/17/1996
  N/A
  Common Shares
  12/10/1999
  Gift
  Mother's Trust
  N
  305
  12/10/1999
  N/A
  Common Shares
  09/01/2010
  Merger/Acquisition
  REIT CONVERSION
  N
  4865
  09/01/2010
  N/A
  N
  Nicole W. Piasecki
  c/o WEYERHAEUSER COMPANY
  220 OCCIDENTAL AVENUE SOUTH
  SEATTLE
  WA
  98104
  Common Shares
  02/23/2024
  33426
  1124326.96
  Shares are being sold from Gregory W. Piasecki Estate Trust.
  03/11/2024
  /s/ Myra King, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Nicole W. Piasecki