LAC may refer to:

Places

  • La Crescenta, California, unincorporated area in Los Angeles County
  • Latin America and the Caribbean
  • Latin American and Caribbean Group, United Nations geoscheme region
  • Line of Actual Control, a demarcation line between Indian-controlled and Chinese-controlled territories (1959–present)
  • Los Angeles County in California
  • Los Angeles, California

Education

  • Liberal arts college, undergraduate educational institution
  • Longburn Adventist College, a Seventh-day Adventist school near Palmerston North, in Longburn, New Zealand

Government and military

  • California State Prison, Los Angeles County
  • Leading Aircraftman, a rank in some air forces

Organizations

  • LAC Group, library services vendor in America
  • LAC Minerals, a Canadian mining company
  • Ladies' Alpine Club (1907–1975), a club for women climbers, based in London, merged in 1975 with the Alpine Club
  • Lake Avenue Church, Pasadena Ca.
  • Lancashire Aero Club, flying club in the United Kingdom
  • Legal Aid Commission, organisation providing legal aid related to Community legal centres, Australia
  • Library and Archives Canada, national memory institution preserving documentary heritage about Canadian life
  • Liga Antituberculosa Colombiana, an organization focused on curing and preventing tuberculosis

Science and technology

  • L2TP Access Concentrator, endpoint of a Layer 2 Tunneling Protocol tunnel
  • Laboratoire Aimé-Cotton, French research laboratory
  • Linear acetylenic carbon, a polymeric carbon chain
  • Location area code, a unique 16-digit fixed length location area identity code broadcast by a "base transceiver station" in GSM public land mobile network, that identifies a phone number's location area
  • Lorenz asymmetry coefficient, a statistic used in the analysis of wealth or income inequality
  • lac operon, a DNA operon relating to the metabolism of lactose found in some bacteria

Sports

  • London Aquatics Centre
  • Los Angeles Chargers, a National Football League team based in Inglewood, California
  • Los Angeles Clippers, a National Basketball Association team based in Inglewood, California
  • London Athletic Club, oldest independent athletic club in the world

Transport

  • LAC, the ICAO operator designator for Lockheed Corporation (Lockheed Aircraft Corporation), United States
  • LAC, the station code for Lancing railway station in West Sussex, England
  • LAC Colombia, a former airline in Colombia (1974–1996)
  • Granada LAC, a bus rapid transit system in the city of Granada, Spain
  • Lignes Aériennes Congolaises, a former airline of the Democratic Republic of the Congo (2005–2013)
  • Linea Aerea Cuencana, a regional airline operating out of Cuenca, Ecuador
  • Líneas Aéreas Canarias, a former airline of the Canary Islands, Spain (1985–1990)

See also

  • Lanthanum carbide (LaC2)
  • Lac (disambiguation)
  • LACS (disambiguation)
  • LACC (disambiguation)
  • L.A.C. Battle of Galwan, a 2025 Indian film about the 2020 skirmish at the Line of Actual Control