BSL

BSL may refer to:

Business

 * Black Star Line, a former shipping line owned by Marcus Garvey
 * BlueScope Steel Limited, an Australian-based flat product steel producer
 * Boyne Smelters Limited, an Australian-based aluminium smelter company
 * Brookdale Senior Living, a U.S. company that operates senior residences

Education

 * Bachelor of Science in Law, an academic degree
 * British School of Lomé, Togo, a school in Togo, West Africa

Linguistics

 * British Sign Language
 * Bhutanese Sign Language

Publications

 * Bulletin de la Société de Linguistique de Paris, an academic journal published by the Société de Linguistique de Paris
 * Bulletin of Symbolic Logic, from the Association for Symbolic Logic
 * Transport Phenomena (book), an engineering textbook also known by its authors' initials (Bird, Stewart, and Lightfoot)

Science and computing

 * Biosafety level or biohazard safety level, a set of biocontainment precautions
 * Blood sugar level
 * Boost Software License, a license popular for C++ projects
 * Bootstrap loader, the software involved in booting a computer
 * Business Source License, a source-available software license

Sports

 * Basketball Super League (Turkish: Basketbol Süper Ligi), Turkey's premier men's basketball league
 * Basketball Super League (North America), North American basketball league
 * Israeli Basketball Super League, a former name of the Israeli Basketball Premier League

Transportation

 * EuroAirport Basel Mulhouse Freiburg (IATA airport code)
 * Broad Street Line, a subway line in Philadelphia, Pennsylvania, US

Other uses

 * Bangladesh Student League, a students' political organisation in Bangladesh
 * Biologic Space Laboratories, the location of the Metroid Fusion video game
 * Beam stage loader, a machine that forms part of a longwall mine
 * Breed-specific legislation, a type of law to prohibit or restrict the keeping of particular breeds or types of dog