CSL

• Coordinated Science Laboratory, at the University of Illinois • Liège Space Center (Centre spatial de Liège), at the University of Liege in Belgium • Central Science Laboratory, a former UK DEFRA laboratory services agency • Cabo San Lucas, a resort city located at the southern tip of the Baja California Peninsula, in Baja California Sur ==Languages==

• Croatian Sign Language, a sign language for the deaf in Croatia • Chinese Sign Language, a sign language for the deaf in China, Malaysia, and Taiwan • Clay Sanskrit Library, a series of books in Sanskrit with English translations • Context-sensitive language, a class of formal languages in computational linguistics ==Sciences==

• Crosshole sonic logging, method for testing a constructed material • Calcium stearoyl-2-lactylate, a food additive used as an emulsifier • Continuous spontaneous localization, a dynamical reduction theory in quantum mechanics • Hartmann's solution, compound sodium lactate, used in intravenous transfusions ==Military==

• Cooperative Security Location, a US military facility • CSL, the designation code for Royal Australian Navy Wattle-class crane stores lighters ==Computing==

• Citation Style Language, an open XML-based standard to format citations and bibliographies • Current-steering logic, an alternative name for emitter-coupled logic in electronics • Context-sensitive language, a language generated from a context-sensitive grammar ==Companies==

• CSL Group Ltd, a British machine to machine communications company • CSL Mobile, subsidiary of Hong Kong Telecom • CSL Limited, an Australian biotechnology company, formerly Commonwealth Serum Laboratories • CSL Behring, a subsidiary company of CSL Limited • Canada Steamship Lines, a Canadian shipping company • CSL Sofas, a furniture chain in the United Kingdom • Cochin Shipyard Limited, a shipbuilding company in Kerala, India ==Sports==

• CAL Spora Luxembourg, amateur athletics club in Luxembourg • Canadian Soccer League, a soccer league in Canada since 2006 • Canadian Soccer League (1987–1992), a soccer league in Canada • Chinese Super League, the premier league of association football in China • Cosmopolitan Soccer League, a soccer league in United States • IOC sport code for canoe slalom at the Summer Olympics ==Politics==

• Canadian Socialist League, a political party active from 1898 to 1904 • Czechoslovak People's Party (Československá strana lidová, ČSL), a political party ==Others==

• CSL-TV, an American Forces Network television station in Lajes Field, Azores, Portugal • Centers for Spiritual Living, a religious denomination • Certain models of BMW car, designated BMW CSL • Charter seat license, name used by a few sports teams for a personal seat license