| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Gurutz | - | Basque | ||
| Gurutze | - | Basque | ||
| Gus (1) | GUS | English, Scottish | ||
| Gussie | GUS-ee | English | ||
| Gustaf | GOO-stahf (German) | Swedish, German | ||
| Gustav | GOO-stahf (German) | Swedish, Norwegian, Danish, German | ||
| Gustavo | goo-STAH-vo (Italian, Spanish) | Italian, Spanish, Portuguese | ||
| Gustaw | GUWS-tahf | Polish | ||
| Gusti | - | Indonesian, Balinese | ||
| Guto | GI-taw | Welsh | ||
| Gutxi | - | Basque | ||
| Guy | GIE (English), GEE (French) | English, French | ||
| Gwalchmei | - | Welsh Mythology | ||
| Gwallter | - | Welsh | ||
| Gwandoya | - | Eastern African, Ganda |