Tsk or TSK may refer to: "tsk!", a dental click Tsk Tsk Tsk, an Australian music, art and performance group Galoter process, shale oil extraction technology San-in Chūō Television Broadcasting, a Japanese TV station Takagi-Sugeno-Kang, a system of Fuzzy logic Terrace step kink, a model to describe the thermodynamics of crystal surface formation The Sleuth Kit, computer forensics tools Tiger Schulmann's Karate Tomsk Avia (ICAO: TSK), a Russian airline Transmission security keys Tseku language (ISO 639:tsk), a language of Tibet Turkish Armed Forces (Turkish: Türk Silahlı Kuvvetleri)