B4
From Wikipedia, the free encyclopedia
B4 or B-4 may refer to:
- Vitamin B4
- B4, an international standard paper size (250×353 mm), defined in ISO 216.
- B4 star, a subclass of B-class stars
- Babylon 4 space station, the predecessor to the Babylon 5 station from the Babylon 5 television series
- B.A.C.H. Flugbetriebs IATA airline designator (ICAO BCF)
- Bankair IATA code, ICAO airline designator (BKA)
- Flyglobespan IATA airline designator
- HMS B4, a B-class submarine of the Royal Navy.
- Internet shorthand for "before"
- The Keystone B-4, a United States Army Air Corps biplane bomber
- A level of vehicle armour
- B-4, an android in the Star Trek fictional universe
- B4 (music show), an early morning pop promo show on Channel 4 TV, produced by The Chart Show
- 203-mm howitzer M1931 (B-4), a Soviet ordnance piece from World War II
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