CLK

CLK may refer to:

Transport

• Cadillac and Lake City Railway
• Changle railway station (Shandong), China
• Clinton Regional Airport, Oklahoma, United States
• Clock House railway station, London, England
• Hong Kong International Airport
• Mercedes-Benz CLK-Class

Other uses

• Public Schools of Calumet-Laurium-Keweenaw
• Česká lékařská komora (ČLK), a Czech doctors' organization; see David Rath
• Clackmannanshire, a historic county in Scotland
• Confederation of Labour of Kazakhstan
• Idu Mishmi language
• Hunter-Killer cruiser; see List of cruisers of the United States Navy