| Gualtiero | | - | Italian | |
| Gudbrand | | - | Norwegian, Danish | |
| Gudmund | | - | Swedish, Norwegian, Danish | |
| Gudrun | | GOOD-roon (German) | Norse Mythology, Swedish, Norwegian, Danish, German | |
| Guenevere | | - | Arthurian Romance | |
| Guerino | | - | Italian | |
| Guglielmo | | gool-LYEL-mo | Italian | |
| Guido | | GWEE-do (Italian), GEE-do (German) | Italian, German | |
| GuifrÉ | | - | Catalan | |
| Guillem | | - | Catalan | |
| Guillermo | | gee-YER-mo | Spanish | |
| Guinevere | | GWIN-ə-vir (English) | Arthurian Romance | |
| Guiomar | | gee-oo-MAR (Portuguese), gee-o-MAHR (Spanish) | Portuguese, Spanish, Arthurian Romance | |
| Gulbrand | | - | Norwegian (Rare), Danish (Rare) | |
| Gulbrandr | | - | Ancient Scandinavian | |