| Name | Meaning | Gender | Origin |
|---|
| Frosty | Covered with white frost. Cold in manner | Male | |
| Fudge | A soft, rich candy | Male | |
| Gabby | Strength Of God | Unisex | English |
| Gadget | | Male | Hebrew |
| Galaxy | Galaxy, Universe | Female | English |
| Galileo | from Galilee | Male | Italian |
| Georgia | farmer, to work the earth | Female | English |
| Ghost | A haunting spirit or memory. One who moves noiselessly. | Unisex | |
| Gibbs | | Unisex | Hebrew |
| Ginger | A spice | Female | English |
| Gizmo | A mechanical device or gadget. | Unisex | |
| Good Luck | | Unisex | |
| Gotham | | Unisex | Hebrew |
| Graphite | | Unisex | Hebrew |
| Grimalkin | | Unisex | Hebrew |
| Gucci | | Female | Hebrew |
| Guenhwyvar | | Unisex | Hebrew |
| Guinness | Brand of stout beer from Ireland. | Unisex | |
| Gypsy | Wanderer
| Female | English |
| Hades | World of the dead or hell. | Male | |
| Halloween | | Unisex | Hebrew |
| Harlow | Meadow of the hares. Variant of Harley. Surname.
| Female | English |
| Hecate | Mythical Witchcraft Goddess | Unisex | Greek |
| Hera | Queen of the Gods | Female | Greek |
| Hershey | Brand of chocolate. | Male | |