| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| GUGLIELMO | gool-LYEL-mo | Italian | ||
| GUIDO | GWEE-do (Italian), GEE-do (German) | Italian, German | ||
| GUIFRÉ | - | Catalan | ||
| GUILHERME | gee-LYER-mə | Portuguese | ||
| GUILLAUME | gee-OM | French | ||
| 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 | ||
| GUISCARD | gees-KAHR | Medieval French | ||
| GUIYING | - | Chinese | ||
| GUL | - | Urdu, Pashto | ||
| GULBADAN | - | Urdu (Rare) | ||
| GULBAHAR | - | Urdu | ||
| GULBRAND | - | Norwegian (Rare), Danish (Rare) |