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">
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  <submissionType>144</submissionType>
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  <filer>
  <filerCredentials>
  <cik>0001975191</cik>
  <ccc>XXXXXXXX</ccc>
  </filerCredentials>
  </filer>
  <liveTestFlag>LIVE</liveTestFlag>
  </filerInfo>
  </headerData>
  <formData>
  <issuerInfo>
  <issuerCik>0001711375</issuerCik>
  <issuerName>LOMA NEGRA C.I.A.S.A.</issuerName>
  <secFileNumber>001-38262</secFileNumber>
  <issuerAddress>
  <street1 xmlns="http://www.sec.gov/edgar/common">CECILIA GRIERSON 355</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">4TH FLOOR</street2>
  <city xmlns="http://www.sec.gov/edgar/common">BUENOS AIRES</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">C1</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">C1107CPG</zipCode>
  </issuerAddress>
  <issuerContactPhone>54 114-319-3000</issuerContactPhone>
  <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Faifman Sergio Damian </nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
  <relationshipsToIssuer>
  <relationshipToIssuer>Officer</relationshipToIssuer>
  <relationshipToIssuer>Director</relationshipToIssuer>
  </relationshipsToIssuer>
  </issuerInfo>
  <securitiesInformation>
  <securitiesClassTitle>ADS</securitiesClassTitle>
  <brokerOrMarketmakerDetails>
  <name>PERSHING LLC</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">One Pershing Plaza, Jersey City, USA</street1>
  <city xmlns="http://www.sec.gov/edgar/common">Jersey City</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">NJ</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">07399</zipCode>
  </address>
  </brokerOrMarketmakerDetails>
  <noOfUnitsSold>10000</noOfUnitsSold>
  <aggregateMarketValue>126000</aggregateMarketValue>
  <noOfUnitsOutstanding>19646</noOfUnitsOutstanding>
  <approxSaleDate>05/20/2025</approxSaleDate>
  <securitiesExchangeName>NYSE</securitiesExchangeName>
  </securitiesInformation>
  <securitiesToBeSold>
  <securitiesClassTitle>ADS</securitiesClassTitle>
  <acquiredDate>03/18/2024</acquiredDate>
  <natureOfAcquisitionTransaction>Compensation plan</natureOfAcquisitionTransaction>
  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
  <isGiftTransaction>N</isGiftTransaction>
  <amountOfSecuritiesAcquired>10000</amountOfSecuritiesAcquired>
  <paymentDate>03/18/2024</paymentDate>
  <natureOfPayment>N/A</natureOfPayment>
  </securitiesToBeSold>
  <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Sergio Damian Faifman</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">CECILIA GRIERSON 355, 4TH FLOOR</street1>
  <city xmlns="http://www.sec.gov/edgar/common">City of Buenos Aires</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">C1</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">C1107CPG</zipCode>
  </address>
  </sellerDetails>
  <securitiesClassTitle>Loma Negra - ADS</securitiesClassTitle>
  <saleDate>05/14/2025</saleDate>
  <amountOfSecuritiesSold>8474</amountOfSecuritiesSold>
  <grossProceeds>105000</grossProceeds>
  </securitiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Sergio Damian Faifman</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">CECILIA GRIERSON 355, 4TH FLOOR</street1>
  <city xmlns="http://www.sec.gov/edgar/common">City of Buenos Aires</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">C1</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">C1107CPG</zipCode>
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  <securitiesClassTitle>Loma Negra - ADS</securitiesClassTitle>
  <saleDate>05/16/2025</saleDate>
  <amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
  <grossProceeds>125000</grossProceeds>
  </securitiesSoldInPast3Months>
  <noticeSignature>
  <noticeDate>05/20/2025</noticeDate>
  <signature>SERGIO DAMIAN FAIFMAN</signature>
  </noticeSignature>
  </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4064}]
text: 144
  0001975191
  XXXXXXXX
  LIVE
  0001711375
  LOMA NEGRA C.I.A.S.A.
  001-38262
  CECILIA GRIERSON 355
  4TH FLOOR
  BUENOS AIRES
  C1
  C1107CPG
  54 114-319-3000
  Faifman Sergio Damian
  Officer
  Director
  ADS
  PERSHING LLC
  One Pershing Plaza, Jersey City, USA
  Jersey City
  NJ
  07399
  10000
  126000
  19646
  05/20/2025
  NYSE
  ADS
  03/18/2024
  Compensation plan
  Issuer
  N
  10000
  03/18/2024
  N/A
  N
  Sergio Damian Faifman
  CECILIA GRIERSON 355, 4TH FLOOR
  City of Buenos Aires
  C1
  C1107CPG
  Loma Negra - ADS
  05/14/2025
  8474
  105000
  Sergio Damian Faifman
  CECILIA GRIERSON 355, 4TH FLOOR
  City of Buenos Aires
  C1
  C1107CPG
  Loma Negra - ADS
  05/16/2025
  10000
  125000
  05/20/2025
  SERGIO DAMIAN FAIFMAN