BSK is a three-letter abbreviation that may refer to:
Sports OFK Beograd, Serbian football club FK BSK Borča, Serbian football club FK BSK Batajnica, Serbian football club FK BSK Banja Luka, Bosnian-Herzegovinian football club FK BSK Ledinci, Bosnian-Herzegovinian football club BSK Saint Petersburg, a former Russian bandy club Biratnagar Super Kings, a franchise cricket team
Other uses Banashankari, a neighborhood in Bangalore, India Basingstoke railway station, station code Brake Standard Corridor, a railway coach type in the U.K. The British School of Kuwait Brödraskapet, a Swedish prison gang BSK Defense, a Greek manufacturer of aerial target and aerial observation products BSk, cold semi-arid climate BSK Jr. books, in the Bailey School Kids series Burushaski (ISO 639:bsk), a language spoken by Burusho people in Pakistan and India Bone Street Krew, a professional wrestling group