| Abbreviation | Definition |
|---|---|
| GATES | Government Authorised Tax Elimination Strategies |
| GATS | General Agreement on Trade in Services |
| GATT | General Agreement on Tariffs and Trade |
| GATT | A Global Arrangement For Tax Treaties |
| GATT | Groot Akris Tafeltennis Toernooi |
| GATT | Gate Assisted Turnoff Thyristor |
| GATT | General Agreement On Trade And Tariffs |
| GAU | Gauze |
| GAUSS | Galileo And Umts Synergetic System |
| GAW | Global Atmosphere Watch |
| GB | Great Britain |
| GB | Gega Byte |
| GBC | Governors Business Council |
| GBD | Gallbladder disease |
| GBE | Knight Grand Cross of the British Empire |
| GBE | Certified Green Building Engineer |
| GBH | Giving Bodies Harm |
| GBH | Grievous Bodily Harm |
| GBI | Grand Bahama Island |
| GBI | Georgia Bureau of Investigation |
| GBIF | Global Biodiversity Information Facility |
| GBL | Government Bill of Lading |
| GBM | Glomerular Basement Membrane |
| GBM | Glioblastoma Multiforme |
| GBR | Glass Bead Rating |
| GBR | Guided Bone Regeneration |
| GBRS | Generic Block Recording System |
| GBS | Gallbladder Series |
| GBS | Guillain- Barr |
| GBS | Ground Based Software |
| GBT | Green Bank Telescope |
| GBU | Ground Based Unit |
| GC | General Condition |
| GC | Granulosa Cell |
| GC | GyroCompassing |
| GC | Guidance Control |
| GC | Ground Control |
| GC | Gigacycles |
| GC | Global Catalog |
| GC | Gizmo Cost |
| GCA | General Currency Area |
| GCA | Giand Cell Arteritis |
| GCA | Giant Cell Arteritis |
| GCA | Ground Controlled Approach |
| GCA | Ground Control Approach |
| GCA | Global Cash Access |
| GCB | Grand Conseil de Bordeaux |
| GCBF | Global Cerebral Blood Flow |
| GCC | Gulf Cooperation Council |
| GCC | Ground Communications Coordinator |