| Abbreviation | Definition |
|---|---|
| GPRTU | Ghana Private Roads and Transport Unions |
| GPRTU | Ghana Private Roads Transport Union |
| GPRTU | Ghana Public Road Transport Union |
| GPSU | Guyana Public Service Union |
| GPTWU | Guyana Postal and Telecommunication Workers Union |
| GPTWU | Guyana Postal and Telecommunications Workers Union |
| GPTWU | Guyana Postal and Telecoms Workers Union |
| GPU | Global Photographic Union |
| GRFCU | Grand Rapids Family Credit Union |
| GRFCU | Great River Federal Credit Union |
| GRFU | Ghana Rugby Football Union |
| GRFU | Gibraltar Rugby Football Union |
| GRFU | Gibraltar Rugby Football Union Gibraltar Rugby Football Union |
| GRFU | Gloucester Rugby Football Union |
| GRFU | Gloucestershire Rugby Football Union |
| GRFU | Guyana Rugby Football Union |
| GRTU | General Retailers and Traders Union |
| GRU | Glavnoe Razvedovatelnoe Upravlenie |
| GSCU | Granite State Credit Union |
| GSCU | Gulf States Credit Union |