| Abbreviation | Definition |
|---|---|
| Gina | Georgina |
| GINGER | Virginia |
| GJ | Geert-Jan |
| GJ | George James |
| GJ | George, Junior |
| GJ | Gordie Johnson |
| GJ | Gordon John |
| GJ | Grainger, Junior |
| GJ | Grandma Jo |
| GJ | Grandma Judy |
| GJ | Grandpa Joe |
| GJ | Grandpa John |
| GK | Good Kid |
| GK | Grey Kitty |
| GLO | Gloria |
| GLODOT | Gloria Dorothy |
| GLOZ | Gloria Zoe |
| GM | Grace Modi |
| GMD | Geoff Michael David |
| GOAT | G- GREATESTO- OFA- ALLT- TIME |