GB1

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