BBS may refer to:
Technologies
- Bulletin board system, a computer that allows users to dial into the system over a phone line or telnet connection
- BIOS Boot Specification, a system firmware specification related to initial program load (IPL; AKA booting)
- Blum Blum Shub, a pseudorandom number generator
Organisations
- Bahrain Bayan School, a school in Bahrain
- Bangladesh Bureau of Statistics
- Birmingham Business School, a business school in the UK
- Bologna Business School, a business school in Italy
- Budapest Business School, a business school in Hungary
- BBS Kraftfahrzeugtechnik AG, an automobile wheel manufacturer
- Bodu Bala Sena, a Sri Lankan political organization
- British Blind Sport, a sporting charity for people who are visually impaired
- British Boy Scouts
- British Bryological Society
- Badger Boys State, a youth government camp held in Wisconsin
Science
- Bardet–Biedl syndrome, a genetic disorder
- Behavioral and Brain Sciences, a peer-reviewed journal
- Berg Balance Scale, a test of a person's static and dynamic balance abilities
- Bogart–Bacall syndrome, a vocal misuse disorder named after Humphrey Bogart and Lauren Bacall
- Borate buffered saline
- Breeding bird survey, which monitors the status and trends of bird populations
Culture
- Baton Broadcast System, a system of Canadian television stations
- Bhutan Broadcasting Service, a radio and television service in Bhutan
- BBS Productions, a film production company of early 1970s New Hollywood
- Kingdom Hearts Birth by Sleep, a video game for the PlayStation Portable
Other
- Behavior-based safety, a process to reduce risks by focusing on the behaviors that lead to increased hazards
- Bachelor of Business Studies, an academic degree
- BBs, another name for the metal ammunition used by a BB gun
- BBs, another name for the plastic-pellet ammunition used by an airsoft gun
- Bronze Bauhinia Star, in the Hong Kong honors system