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>0001799779</cik>
  <ccc>XXXXXXXX</ccc>
  </filerCredentials>
  </filer>
  <liveTestFlag>LIVE</liveTestFlag>
  </filerInfo>
  </headerData>
  <formData>
  <issuerInfo>
  <issuerCik>0001653087</issuerCik>
  <issuerName>Alector, Inc.</issuerName>
  <secFileNumber>001-38792</secFileNumber>
  <issuerAddress>
  <street1 xmlns="http://www.sec.gov/edgar/common">131 Oyster Point Blvd.</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">Suite 600</street2>
  <city xmlns="http://www.sec.gov/edgar/common">South San Francisco</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">94080</zipCode>
  </issuerAddress>
  <issuerContactPhone>(415)-231-5660</issuerContactPhone>
  <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Gary Romano</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
  <relationshipsToIssuer>
  <relationshipToIssuer>Officer</relationshipToIssuer>
  </relationshipsToIssuer>
  </issuerInfo>
  <securitiesInformation>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <brokerOrMarketmakerDetails>
  <name>Morgan Stanley Smith Barney LLC Executive Services</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">200 W Civic Center Dr.</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">4th Floor</street2>
  <city xmlns="http://www.sec.gov/edgar/common">Sandy</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">UT</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">84070</zipCode>
  </address>
  </brokerOrMarketmakerDetails>
  <noOfUnitsSold>14306</noOfUnitsSold>
  <aggregateMarketValue>23461.84</aggregateMarketValue>
  <noOfUnitsOutstanding>99085888</noOfUnitsOutstanding>
  <approxSaleDate>03/03/2025</approxSaleDate>
  <securitiesExchangeName>Nasdaq</securitiesExchangeName>
  </securitiesInformation>
  <securitiesToBeSold>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <acquiredDate>02/28/2025</acquiredDate>
  <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
  <isGiftTransaction>N</isGiftTransaction>
  <amountOfSecuritiesAcquired>33723</amountOfSecuritiesAcquired>
  <paymentDate>02/28/2025</paymentDate>
  <natureOfPayment>(1)</natureOfPayment>
  </securitiesToBeSold>
  <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Gary Romano</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">C/O Alector, Inc.</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">131 Oyster Point Blvd., Suite 600</street2>
  <city xmlns="http://www.sec.gov/edgar/common">South San Francisco</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">94080</zipCode>
  </address>
  </sellerDetails>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <saleDate>12/02/2024</saleDate>
  <amountOfSecuritiesSold>14892</amountOfSecuritiesSold>
  <grossProceeds>37519.13</grossProceeds>
  </securitiesSoldInPast3Months>
  <remarks>(1) The securities to be sold were received upon the settlement of vested restricted stock units, or RSUs.
  The reported shares will be sold to satisfy the reporting person's tax obligations in connection with the vesting of RSUs.</remarks>
  <noticeSignature>
  <noticeDate>02/28/2025</noticeDate>
  <signature>/s/ Jordan Hochstrasser, by power of attorney</signature>
  </noticeSignature>
  </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 3815}]
text: 144
  0001799779
  XXXXXXXX
  LIVE
  0001653087
  Alector, Inc.
  001-38792
  131 Oyster Point Blvd.
  Suite 600
  South San Francisco
  CA
  94080
  (415)-231-5660
  Gary Romano
  Officer
  Common Stock
  Morgan Stanley Smith Barney LLC Executive Services
  200 W Civic Center Dr.
  4th Floor
  Sandy
  UT
  84070
  14306
  23461.84
  99085888
  03/03/2025
  Nasdaq
  Common Stock
  02/28/2025
  Vesting of Restricted Stock Units
  Issuer
  N
  33723
  02/28/2025
  (1)
  N
  Gary Romano
  C/O Alector, Inc.
  131 Oyster Point Blvd., Suite 600
  South San Francisco
  CA
  94080
  Common Stock
  12/02/2024
  14892
  37519.13
  (1) The securities to be sold were received upon the settlement of vested restricted stock units, or RSUs.
  The reported shares will be sold to satisfy the reporting person's tax obligations in connection with the vesting of RSUs.
  02/28/2025
  /s/ Jordan Hochstrasser, by power of attorney