CSL as an abbreviation may stand for:
CSL Limited is a global specialty biotechnology company that researches, develops, manufactures and markets products to treat and prevent serious human medical conditions.
CSL Group Limited is an international Critical Connectivity provider specialising in Machine-to-Machine (M2M) communications.
CSL Limited (Chinese: 香港移動通訊有限公司) is Hong Kong's first mobile communications operator established in 1983. It operates a GSM / WCDMA /UMTS 900 network in Hong Kong and launched the world’s first dual band 4G LTE with DC-HSPA+ network with the brands 1O1O, csl, and SUN Mobile.
The Canadian Soccer League Golden Boot is an annual Canadian soccer award given to the top goalscorer for each season in the Canadian Soccer League.
CSL Tadoussac is lake freighter currently operated by Canada Steamship Lines (CSL), on the North American Great Lakes.
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