BBS
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

Arts and media
 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

Transport
 Bhubaneswar railway station, Odisha, India (Indian Railways station code)
 Bras Basah MRT station, Singapore (MRT station abbreviation)

Other uses
 Behavior-based safety, a risk reduction method
 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