CASL

CASL may refer to:


 * Canadian Association for School Libraries
 * Canada's Anti-Spam Legislation
 * Capital Area Soccer League
 * Center for Advanced Study of Language
 * China Aircraft Services Limited
 * Club Atletico San Lorenzo
 * Commercial Aircraft Sales and Leasing
 * Committee of American Steamship Lines
 * Common Algebraic Specification Language
 * Compact Application Solution Language
 * Complex and Adaptive Systems Laboratory
 * Consortium for the Advanced Simulation of Light Water Reactors