BB, Bb, or similar, may refer to:
In arts and entertainment
- BB, abbreviation for a catalogue of works by Béla Bartók
- BB (album), by Mod Sun (2017)
- "BB Talk", 2015 song by Miley Cyrus
- BB (Transformers), a character in the franchise
- BB, pseudonym of author and artist Denys Watkins-Pitchford
- BB, an AAlib ASCII art demo for MS-DOS and Linux
- BB, the signatory monogram of the artist Bessie Bamber
- Les B.B., a Canadian band from Quebec
- Baahubali (franchise), an Indian historical epic media franchise, often abbreviated as BB
- BattleBots, a robot combat TV show
- Beast Boy, a comic book character
- Beyond Birthday, a character from the novel Death Note Another Note: The Los Angeles BB Murder Cases
- Big Brother (Nineteen Eighty-Four), a character in George Orwell's novel Nineteen Eighty-Four
- Big Brother (TV series), home living reality TV popularity contest show
- Billy Butcher, supporting character and final antagonist of The Boys comic book series
- BB, the production code for the 1966 Doctor Who serial The War Machines
- Balloon Boy, an animatronic character in Five Nights at Freddy's
- BB-8, a robot in the Star Wars franchise
- Breaking Bad
- Bugs Bunny
Businesses and organizations
- BB 2000 Ltd, publisher of British Birds
- BB Bloggingsbooks, an imprint of the German group VDM Publishing
- BB Microlight, a Hungarian ultralight aircraft manufacturer
- Balair (IATA airline code)
- Banco do Brasil S.A., largest Brazilian and Latin American bank by assets
- Bavarian Peasants' League or BB, a former German political party
- BlackBerry Limited (stock ticker BB), Canadian technology company
- Borderland Beat, an English-language news blog covering the Mexican Drug War
- Boys' Brigade, a Christian youth organization
- Seaborne Airlines, IATA airline code
People
- B. B. King (1925–2015), American musician and songwriter
- Brigitte Bardot (born 1934), French actress
- Benazir Bhutto (1953–2007), former Pakistani prime minister
- Denys Watkins-Pitchford (1905–1990), British children's author's pseudonym
- Bipasha Basu (born 1979), Indian actress, referred to by the shorthand B. B.
- Balayya Babu or BB, nicknames of Indian actor Balakrishna (born 1960)
- Balakrishna-Boyapati, Indian actor and director duo, known as BB, cf. BB3
Places
- BB postcode area, Blackburn, England
- Barbados (ISO and NATO 2-letter country code BB)
- .bb, the top-level domain for Barbados
- Bourbon County, Kansas (state county code)
- Brandenburg, Germany (ISO 3166-2 code BB)
Science
- Branch and bound, a general algorithm for finding optimal solutions
- Busy beaver class in computing theory, a type of Turing Machine
- Beta blocker, medication used to manage arrhythmias and to protect the heart from a second heart attack after a first heart attack
Transportation
- BB Microlight, a Hungarian ultralight aircraft manufacturer
- Bürgenstock-Bahn, a funicular railway in the Swiss canton of Nidwalden
- Toyota bB, a car sold in Japan
- NZR Bb class, a New Zealand locomotive class
- Balair (IATA airline code BB, 1925-2001)
- Seaborne Airlines (IATA airline code BB, 1992-present)
- Buckingham Branch Railroad (reporting mark BB)
- A US Navy hull classification symbol: Battleship (BB)
- B (New York City Subway service), known as BB before 1967
- B-B, a classification of AAR wheel arrangement of railway locomotives
Other uses
- BB (ammunition), ammunition for a BB gun
- Base on balls in baseball, commonly known as a walk
- BB cream, a type of cosmetic
- Bed and breakfast or B&B, a style of accommodation
- BBCode, a lightweight markup language used to format posts in many message boards