BBS may refer to:
Ammunition BBs, BB gun metal bullets BBs, airsoft gun plastic pellets
Computing and gaming Bulletin board system, a computer server users dial into via dial-up or telnet; precursor to the Internet forum BIOS Boot Specification, a firmware specification for the boot process Blum Blum Shub, a pseudorandom number generator Kingdom Hearts Birth by Sleep, a Disney-based video game for the PlayStation Portable
Organisations United Kingdom Birmingham Business School (University of Birmingham), a faculty British Blind Sport, a parasports charity British Boy Scouts, a national youth association British Bryological Society, a botanists' learned society
United States BBS Productions, a film company of early 1970s New Hollywood Badger Boys State, a youth camp held in Wisconsin
Elsewhere BBS Kraftfahrzeugtechnik, a German wheel manufacturer Buddhist Broadcasting System, a South Korean religious TV network Bahrain Bayan School Bangladesh Bureau of Statistics Baton Broadcast System, Canada Bhutan Broadcasting Service, Bhutan Bodu Bala Sena, Sri Lanka Bologna Business School, Italy Budapest Business School, Hungary Burma Broadcasting Service, Burma Burgeo Broadcasting System, a cable television company in Burgeo, Canada
Science Bardet–Biedl syndrome, a genetic disorder Behavioral and Brain Sciences, a peer-reviewed journal Behavior-based safety, the risk reduction subfield of behavioural engineering Berg Balance Scale, a medical function test Bogart–Bacall syndrome, a vocal misuse disorder Borate buffered saline, in biochemistry Breeding bird survey, to monitor avian populations
Titles Bachelor of Business Studies, an academic degree Bronze Bauhinia Star, in the Hong Kong honors system
Train stations Bhubaneswar railway station, Odisha, India (by Indian Railways code) Bordesley railway station, Birmingham, England (by National Rail code) Bras Basah MRT station, Singapore (by MRT abbreviation)