| Abbreviation | Definition |
|---|---|
| GABCS | Gibsons Alliance of Business and Community Society |
| GABV | Global Alliance for Banking on Values |
| GAC | Galactic Alliance Credit |
| GACC | Global Alliance for Cannabis Commerce |
| GACC | Global Alliance For Clean Cookstoves |
| GACH | Georgia Alliance of Community Hospitals |
| GADA | Generic Animal Drug Alliance |
| GADIS | Global Alliance of Drug Information Specialists |
| GAFA | Global Atrial Fibrillation Alliance |
| GAHP | Global Alliance Hotel Programme |
| GAIA | Global AIDS Interfaith Alliance |
| GAIA | Global Alliance For Incinerator Alternatives |
| GAIA | The Global Anti Incinerator Alliance |
| GAID | Global Alliance for ICT and Development |
| GAIL | Global Alliance for Innovative Learning |
| GAIT | Global Alliance for IPSC Therapies |
| GALA | Games And Learning Alliance |
| GALA | Gay And Lesbian Alliance |
| GAMBIT | Global Alliance of Makers Building Interstellar Technologies |
| GAMI | Global Alliance for Media Innovation |