LAC
- California State Prison, Los Angeles County
- Community legal centre
- Cuenca, Ecuador
- Granada LAC
- L.A.C. Battle of Galwan
- LAC Colombia
- LAC Group
- LAC Minerals
- LACC (disambiguation)
- LACS (disambiguation)
- La Crescenta, California
- Laboratoire Aimé-Cotton
- Lac (disambiguation)
- Lac operon
- Ladies' Alpine Club
- Lake Avenue Congregational Church
- Lancashire Aero Club
- Lancing railway station
- Lanthanum carbide
- Latin America and the Caribbean
- Latin American and Caribbean Group
- Layer 2 Tunneling Protocol
- Leading Aircraftman
- Liberal arts college
- Library and Archives Canada
- Lignes Aériennes Congolaises
- Line of Actual Control
- Linear acetylenic carbon
- Location area code
- Lockheed Corporation
- London Aquatics Centre
- London Athletic Club
- Longburn Adventist College
- Lorenz asymmetry coefficient
- Los Angeles Chargers
- Los Angeles Clippers
- Los Angeles County
- Los Angeles, California
- Líneas Aéreas Canarias