| Abbreviation | Definition |
|---|---|
| GFTU | General Federation of Trade Unions |
| GGSU | Gandhi Group of Students Union |
| GGSU | Government General Services Union |
| GGU | Global Graduates Union |
| GHCU | Glacier Hills Credit Union |
| GHCU | Golden Horseshoe Credit Union |
| GHCU | Granite Hills Credit Union |
| GHU | Gurjar Hindu Union |
| GISU | Grand Isle Supervisory Union |
| GLCU | Great Lakes Credit Union |
| GMB | General Municipal and Boilermakers |
| GNCTU | Grand National Consolidated Trade Union |
| GNCTU | Grand National Consolidated Trades Union |
| GNU | Global Neko Union |
| GOE | Guild Of Elves |
| GPCU | Graduate Philosophy Students Union |
| GPCU | Graduate Philosophy Students' Union |
| GPCU | Guyana Public Service Union |
| GPMU | Graphical, Paper and Media Union |
| GPRTU | Ghana Private Road Transport Union |