| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Glaucia | - | Ancient Roman | ||
| Gnaeus | GNIE-uws (Ancient Roman), NIE-əs (English) | Ancient Roman | ||
| Godafrid | - | Ancient Germanic | ||
| Godascalc | - | Ancient Germanic | ||
| Godehard | - | Ancient Germanic | ||
| Godeliva | - | Ancient Germanic | ||
| Gordianus | - | Ancient Roman | ||
| Goteleib | - | Ancient Germanic | ||
| Gozzo | - | Ancient Germanic | ||
| GrÍMhildr | - | Norse Mythology, Ancient Scandinavian | ||
| Gratiana | - | Ancient Roman | ||
| Gratianus | - | Ancient Roman | ||
| Grimhilt | - | Ancient Germanic, Germanic Mythology | ||
| Gu&Eth;Brandr | - | Ancient Scandinavian | ||
| Gu&Eth;Fri&Eth;R | - | Ancient Scandinavian |