| Acronym | Definition |
|---|
| GBR | Great Britain |
| GBR | United Kingdom (ISO Country code) |
| GBR | Great Barrier Reef |
| GBR | Gesellschaft Bürgerlichen Rechts |
| GBR | Greater Baton Rouge (various organizations; Baton Rouge, LA) |
| GBR | Get Block Reverse |
| GBR | Greedy Buffer Reuse |
| GBR | Guided Bone Regeneration (bone defects treatment) |
| GBR | Graduate Basis for Registration (various locations) |
| GBR | Ground-Based Radar |
| GBR | Graziadio Business Report (Pepperdine University; California) |
| GBR | Glass-Bead-Rating |
| GBR | Great Bear Rainforest (British Columbia, Canada) |
| GBR | Geotechnical Baseline Report |
| GBR | Guaranteed Bit Rate |
| GBR | Global Broadband Roaming |
| GBR | Gardijska Brigada (Guard Brigade of Croatian Army) |
| GBR | German Blue Ram (tropical fish) |
| GBR | Go Big Red |
| GBR | Go Blue Rendezvous (Michigan) |
| GBR | Galena Bean Rush (Galena, Illinois) |
| GBR | General Binding Rule |
| GBR | Great Burial Reef, Inc |
| GBR | Guadalcanal Beach Resort |
| GBR | Global Backup Reprovisioning |
| GBR | Generate Barcode Update Report |
| GBR | Glass Bulb Rectifier |
| GBR | Global Business Registry |
| GBR | Geodesic Binary Reconstruction |
| GBR | Gun Boosted Rocket |