| Abbreviation | Definition |
|---|---|
| GM | Gambia |
| GMA | General Mariano Alvarez |
| GN | Guinea |
| GNE | Gulf Near East |
| GNH | Gross National Happiness |
| GOOK | Government Of Oppressive Korea ( North Korea) |
| GP | French Guadeloupe |
| GQ | Equatorial Guinea |
| GR | Greece |
| GRACE | Gods Region Appointed Choice of Earth |
| GRI | General Rules for the Interpretation of the Harmonized System |
| GRN | Grenada |
| GS | South Georgia & South Sandwich Islands |
| GSPLAJ | Great Socialist People's Libyan Arab Jamahiriya |
| GSY | Guernsey |
| GT | Guatemala |
| GU | Guam (USA) |
| GUAM | Georgia, Ukraine, Azerbaijan, and Moldova |
| GUI | Guinea |
| GUY | Guyana |