GB1 or variant, may refer to:
GB-1, a WWII U.S. Army Air Force glide bomb Gb1 domain, of the G protein Game Composites GB1 GameBird, a British single-engine two-seat acrobatic aircraft Ghostbusters (1984), the first film in the series BRM Hepworth GB-1, British sports car
See also
GBI (disambiguation) GBL (disambiguation) GB (disambiguation) 1GB