| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Guendolen | - | English (Rare) | ||
| Gus (1) | GUS | English, Scottish | ||
| Gussie | GUS-ee | English | ||
| Guy | GIE (English), GEE (French) | English, French | ||
| Gwen | GWEN | Welsh, English | ||
| Gwenda | GWEN-də (English) | Welsh, English | ||
| Gwendoline | GWEN-də-lien (English), GWEN-də-leen (English) | Welsh, English (British), French | ||
| Gwendolyn | GWEN-də-lin (English) | Welsh, English | ||
| Gwenevere | GWEN-ə-vir | English (Rare) | ||
| Gwyneth | - | Welsh, English (Modern) | ||
| Gyles | JIELZ, JIE-əlz | English (Rare) | ||
| Gypsy | JIP-see | English (Rare) | ||
| Gytha | - | English (Archaic) | ||
| Hadley | HAD-lee | English | ||
| Hadyn | - | English (Rare) |