BSR

BSR may refer to:
 * Backslash-R, a class of options in Perl Compatible Regular Expressions
 * Basrah International Airport, IATA code
 * Vasai Road railway station, Mumbai, India, station code
 * Birmingham Sound Reproducers or BSR McDonald, a former UK audio manufacturer
 * Bit Scan Reverse, find first set x86 instruction
 * Bootstrap Router in Protocol Independent Multicast
 * Brain stimulation reward
 * The British School at Rome
 * Brown Student/Community Radio, Providence, RI, US
 * Brussels Sound Revolution, a Belgian new beat band, best known for the single Qui? (1989).
 * Building Safety Regulator a part of the Health and Safety Executive of the UK Government responsible for building safety in England