content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <headerData>
  <submissionType>144</submissionType>
  <filerInfo>
  <filer>
  <filerCredentials>
  <cik>0001265677</cik>
  <ccc>XXXXXXXX</ccc>
  </filerCredentials>
  </filer>
  <liveTestFlag>LIVE</liveTestFlag>
  </filerInfo>
  </headerData>
  <formData>
  <issuerInfo>
  <issuerCik>0001816581</issuerCik>
  <issuerName>Ouster, Inc.</issuerName>
  <secFileNumber>001-39463</secFileNumber>
  <issuerAddress>
  <street1 xmlns="http://www.sec.gov/edgar/common">350 Treat Avenue</street1>
  <city xmlns="http://www.sec.gov/edgar/common">San Francisco</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">94110</zipCode>
  </issuerAddress>
  <issuerContactPhone>415-949-0108</issuerContactPhone>
  <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Mark Weinswig</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
  <relationshipsToIssuer>
  <relationshipToIssuer>Officer</relationshipToIssuer>
  </relationshipsToIssuer>
  </issuerInfo>
  <securitiesInformation>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <brokerOrMarketmakerDetails>
  <name>ETRADE FINANCIAL CORPORATION</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">3 EDISON DRIVE</street1>
  <city xmlns="http://www.sec.gov/edgar/common">ALPHARETTA</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">GA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">30005</zipCode>
  </address>
  </brokerOrMarketmakerDetails>
  <noOfUnitsSold>3220</noOfUnitsSold>
  <aggregateMarketValue>18901.40</aggregateMarketValue>
  <noOfUnitsOutstanding>40692290</noOfUnitsOutstanding>
  <approxSaleDate>12/11/2023</approxSaleDate>
  <securitiesExchangeName>NYSE</securitiesExchangeName>
  </securitiesInformation>
  <securitiesToBeSold>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <acquiredDate>12/11/2023</acquiredDate>
  <natureOfAcquisitionTransaction>Restricted stock awarded under incentive award plan</natureOfAcquisitionTransaction>
  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
  <isGiftTransaction>N</isGiftTransaction>
  <amountOfSecuritiesAcquired>7000</amountOfSecuritiesAcquired>
  <paymentDate>03/16/2023</paymentDate>
  <natureOfPayment>Services rendered</natureOfPayment>
  </securitiesToBeSold>
  <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Mark Weinswig</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">350 Treat Avenue</street1>
  <city xmlns="http://www.sec.gov/edgar/common">San Francisco</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">94110</zipCode>
  </address>
  </sellerDetails>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <saleDate>09/12/2023</saleDate>
  <amountOfSecuritiesSold>2514</amountOfSecuritiesSold>
  <grossProceeds>12090.83</grossProceeds>
  </securitiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Mark Weinswig</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">350 Treat Avenue</street1>
  <city xmlns="http://www.sec.gov/edgar/common">San Francisco</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">94110</zipCode>
  </address>
  </sellerDetails>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <saleDate>11/29/2023</saleDate>
  <amountOfSecuritiesSold>504</amountOfSecuritiesSold>
  <grossProceeds>2651.04</grossProceeds>
  </securitiesSoldInPast3Months>
  <remarks>Shares to be sold to cover withholding taxes upon vesting of restricted stock award in a trade that will be initiated by the Issuer on the Reporting Person's behalf.</remarks>
  <noticeSignature>
  <noticeDate>12/11/2023</noticeDate>
  <signature>/s/ Mark Weinswig</signature>
  </noticeSignature>
  </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4084}]
text: 144
  0001265677
  XXXXXXXX
  LIVE
  0001816581
  Ouster, Inc.
  001-39463
  350 Treat Avenue
  San Francisco
  CA
  94110
  415-949-0108
  Mark Weinswig
  Officer
  Common Stock
  ETRADE FINANCIAL CORPORATION
  3 EDISON DRIVE
  ALPHARETTA
  GA
  30005
  3220
  18901.40
  40692290
  12/11/2023
  NYSE
  Common Stock
  12/11/2023
  Restricted stock awarded under incentive award plan
  Issuer
  N
  7000
  03/16/2023
  Services rendered
  N
  Mark Weinswig
  350 Treat Avenue
  San Francisco
  CA
  94110
  Common Stock
  09/12/2023
  2514
  12090.83
  Mark Weinswig
  350 Treat Avenue
  San Francisco
  CA
  94110
  Common Stock
  11/29/2023
  504
  2651.04
  Shares to be sold to cover withholding taxes upon vesting of restricted stock award in a trade that will be initiated by the Issuer on the Reporting Person's behalf.
  12/11/2023
  /s/ Mark Weinswig