GBU may refer to:

• Air Bissau (ICAO code: GBU), the national airline of Guinea-Bissau
• Football Association of Greenland (Grønlands Boldspil-Union), the governing body of association football in the island country of Greenland
• Gabriel Resources (TSX-V code: GBU), a Canadian resource company
• Gaston Berger University, the second university established in Senegal
• Gautam Buddha University, a university established by the Uttar Pradesh Gautam Buddha University Act 2002
• Groupes Bibliques Universitaires, student groups that meet at universities or nearby for in-depth Bible study

• GBU-10 Paveway II, an American Paveway-series laser-guided bomb
• GBU-12 Paveway II, an American aerial laser-guided bomb
• GBU-15, an unpowered, glide weapon
• GBU-16 Paveway II, an American Paveway-series laser-guided bomb
• GBU-24 Paveway III, a family of laser-guided bombs
• GBU-28, a 5,000-pound laser-guided "bunker busting" bomb
• GBU-27 Paveway III, a laser-guided bomb with bunker buster capabilities
• GBU-37 GPS-Aided Munition, a GPS-Aided Munition developed for use with the B-2 Bomber
• GBU-39 Small Diameter Bomb, a 250 lb precision-guided glide bomb
• GBU-43/B MOAB, a large-yield bomb
• GBU-44/B Viper Strike, a GPS-aided laser-guided variant of the Northrop Grumman Brilliant Anti-Tank munition
• GBU-53/B, an American air-launched, precision-guided glide bomb

• The Good, the Bad and the Ugly - 1966 Spaghetti western film directed by Sergio Leone
• Countermine System (also GBU-61), an anti-land-mine system consisting of chemical or explosive projectiles
• Gaagudju language (ISO 639-3 code: gbu), an extinct Australian Aboriginal language
• GBU Indoor Stadium, an indoor stadium located in the campus of Gautam Buddha University

This disambiguation page lists articles associated with the title GBU.
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