| Abbreviation | Definition |
|---|---|
| GIM | Miele, Gabon |
| GIR | Girardot, Colombia |
| GIS | Gisborne, New Zealand |
| GIT | Geita, Tanzania |
| GIZ | Gizan, Saudi Arabia |
| GJA | Guanaja Honduras |
| GJL | Jijel, Algeria |
| GJM | Guajara-Mirim, RO, Brazil |
| GJR | Gjogur, Iceland |
| GJT | Grand Junction, Colorado USA |
| GKA | Goroka, Papua New Guinea |
| GKE | Geilenkirchen, Germany |
| GKH | Gorkha, Nepal |
| GKL | Great Keppel Island, Queensland, Australia |
| GKN | Gulkana, Alaska |
| GKO | Kongo-Bomba, Gabon |
| GLA | Glasgow, Scotland, UK |
| GLBU | Buchanan, Liberia |
| GLCM | Robersport Cape Mount, Liberia |
| GLCP | Harper Cape Palmas, Liberia |