| Grenville | | GREN-vil | English (Rare) | |
| Gresham | | GRESH-əm | English (Rare) | |
| Greta | | GRE-tah (German), GRET-ə (English) | Swedish, German, English | |
| Gretchen | | GRET-khen (German), GRECH-ən (English) | German, English | |
| Gretta | | GRET-ə | English | |
| Grey | | GRAY | English (Rare) | |
| Greyson | | GRAY-sən | English (Modern) | |
| Grier | | GREER | Scottish, English (Rare) | |
| Griffin | | GRIF-in | English | |
| Griselda | | gri-ZEL-də (English) | English, Scottish, Spanish, Literature | |
| Grosvenor | | GROV-ə-nər, GROV-nər | English (Rare) | |
| Grover | | GRO-vər | English | |
| Guendolen | | - | English (Rare) | |
| Gus (1) | | GUS | English, Scottish | |
| Gussie | | GUS-ee | English | |