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>0001226378</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>Darien Spencer </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>3498</noOfUnitsSold>
  <aggregateMarketValue>53134.62</aggregateMarketValue>
  <noOfUnitsOutstanding>53794970</noOfUnitsOutstanding>
  <approxSaleDate>06/12/2025</approxSaleDate>
  <securitiesExchangeName>NASDAQ</securitiesExchangeName>
  </securitiesInformation>
  <securitiesToBeSold>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <acquiredDate>06/11/2025</acquiredDate>
  <natureOfAcquisitionTransaction>Restricted stock units 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>
  <securitiesToBeSold>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <acquiredDate>06/11/2025</acquiredDate>
  <natureOfAcquisitionTransaction>Restricted stock units awarded under incentive award plan</natureOfAcquisitionTransaction>
  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
  <isGiftTransaction>N</isGiftTransaction>
  <amountOfSecuritiesAcquired>1294</amountOfSecuritiesAcquired>
  <paymentDate>08/10/2022</paymentDate>
  <natureOfPayment>Services rendered</natureOfPayment>
  </securitiesToBeSold>
  <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Darien Spencer</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>03/12/2025</saleDate>
  <amountOfSecuritiesSold>4489</amountOfSecuritiesSold>
  <grossProceeds>34246.58</grossProceeds>
  </securitiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Darien Spencer</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>03/17/2025</saleDate>
  <amountOfSecuritiesSold>249</amountOfSecuritiesSold>
  <grossProceeds>1996.98</grossProceeds>
  </securitiesSoldInPast3Months>
  <remarks>Shares are to be sold to cover withholding taxes upon vesting of restricted stock unit award in a trade that will be initiated by the Issuer on the Reporting Person's behalf. The transaction dated March 12, 2025 reflects the weighted average sale price, with sale prices ranging from $7.4008 to $7.6323.</remarks>
  <noticeSignature>
  <noticeDate>06/11/2025</noticeDate>
  <signature>/s/ Megan Chung, as Attorney-in-Fact for Darien Spencer</signature>
  </noticeSignature>
  </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4798}]
text: 144
  0001226378
  XXXXXXXX
  LIVE
  0001816581
  Ouster, Inc.
  001-39463
  350 Treat Avenue
  San Francisco
  CA
  94110
  415-949-0108
  Darien Spencer
  Officer
  Common Stock
  ETRADE FINANCIAL CORPORATION
  3 EDISON DRIVE
  ALPHARETTA
  GA
  30005
  3498
  53134.62
  53794970
  06/12/2025
  NASDAQ
  Common Stock
  06/11/2025
  Restricted stock units awarded under incentive award plan
  Issuer
  N
  7000
  03/16/2023
  Services rendered
  Common Stock
  06/11/2025
  Restricted stock units awarded under incentive award plan
  Issuer
  N
  1294
  08/10/2022
  Services rendered
  N
  Darien Spencer
  350 Treat Avenue
  San Francisco
  CA
  94110
  Common Stock
  03/12/2025
  4489
  34246.58
  Darien Spencer
  350 Treat Avenue
  San Francisco
  CA
  94110
  Common Stock
  03/17/2025
  249
  1996.98
  Shares are to be sold to cover withholding taxes upon vesting of restricted stock unit award in a trade that will be initiated by the Issuer on the Reporting Person's behalf. The transaction dated March 12, 2025 reflects the weighted average sale price, with sale prices ranging from $7.4008 to $7.6323.
  06/11/2025
  /s/ Megan Chung, as Attorney-in-Fact for Darien Spencer