LAC is a three-letter abbreviation that may refer to: California State Prison, Los Angeles County L2TP Access Concentrator La Crescenta, California Lancashire Aero Club Law-Abiding Citizen, a movie Latin America and the Caribbean, in the United Nations geoscheme Latin America and the Caribbean, UNESCO region Latin American Countries (Latin America) Leading Aircraftman Liberal arts college Library and Archives Canada Library of American Civilization Lignes Aériennes Congolaises (defunct airl… (More on Lac)