BSM may refer to:

Education Benilde-St. Margaret's, a Catholic, co-educational college prep school in Saint Louis Park, Minnesota, USA Black-Scholes-Merton formula, a formula to calculate option prices Black Student Movement, at the University of North Carolina at Chapel Hill, US Bloomingdale School of Music, Manhattan, New York City, New York, US British School of Motoring, a British driving school Budapest Semesters in Mathematics, program for North American students, Budapest, Hungary

Military Band Sergeant Major, a warrant officer appointment in the British Army Battery Sergeant Major, a warrant officer appointment in some Commonwealth artillery corps Bronze Star Medal The IATA code of the former Bergstrom Air Force Base

Organizations Bangladesh Society of Microbiologists Big Scary Monsters Recording Company, a record label based in the UK Brick Squad Monopoly, a subsidiary of the 1017 Brick Squad Record label Blue Star Mothers

Science and technology Bag Source Message, corresponding to an airline bag tag Basic Safety Message, a type of message sent in dedicated short-range communications, used in automotive Basic Security Module (OpenBSM), a computer auditing system Beyond the Standard Model, extensions to, or phenomena not explained by, the standard theory of particle physics Blind Spot Monitor, a vehicle-based sensor system Bovine Submaxillary Mucin Coatings, a biocompatible coating used to reduce bacterial cell adhesion Business semantics management, an approach to align data (formats, content, metadata, etc.) to the business Business service management, an information technology methodology

Other uses Baltimore Streetcar Museum, in Baltimore, Maryland, USA Bata Shoe Museum, in Toronto, Ontario, Canada Britain's Strongest Man, an annual competition