| Abbreviation | Definition |
|---|---|
| GGC | Gotland Game Conference |
| GGCS | Global Grand Challenges Summit |
| GGE2 | Second session of the Group of Governmental Experts |
| GGF | Global Grid Forum |
| GHC | Grace Hopper Conference |
| GHEC | Global Home Education Conference |
| GHGT | Greenhouse Gas Control Technologies |
| GHIS | GlobalSTL Health Innovation Summit |
| GIC | Game Industry Conference |
| GIC | Global Implementation Conference |
| GIC | Global Internship Conference |
| GIC | Green Industry Conference |
| GIDS | Great Indian Developer Summit |
| GIDS | Great International Developer Summit |
| GIES | Global Islamic Economy Summit |
| GIFC | Global Islamic Finance Conference |
| GIIS | Global Infrastructure Investors Summit |
| GILC | Gemstone Industry Laboratory Conference |
| GILC | Georgia International Leadership Conference |
| GINC | Gorontalo International Nursing Conference |