| Name | Meaning | Gender | Origin |
|---|
| Garnet | Dark red gemstone | Female | |
| Garrison | Spear-fortified town.
| Male | English |
| Gazelle | Graceful, Deer | Female | Latin |
| Gem | A mineral that has been cut and polished | Unisex | |
| Georges Hautecourt | From the AristoCats
| Male | |
| Gila | Eternal joy
| Female | Hebrew |
| Ginger | A spice | Female | English |
| Glacier | A huge mass of ice moving slowly. | Male | |
| Gliona | From the Greek Cleone daughter of a river god
| Female | |
| Glitter | | Male | Hebrew |
| Gobinet | Irish form of Abigail bringsjoy
| Female | |
| Golden | Blond | Male | English |
| Good Luck | | Unisex | |
| Grace | after Grace Kelly | Female | |
| Granger | farmer | Male | English |
| Grant | Bestow or great: tall. The American General and president Ulysses S. Grant. Surname.
| Male | Scottish |
| Griselda Marchbanks | on the Wizengamot, Dumbledore supporter.
| Female | |
| Guadalupe | Named for the Virgin Mary
| Female | Spanish |
| Gweneth | Blessed
| Female | |
| Halley | woodland clearing | Male | Scottish |
| Hallie | thinking of the sea | Female | English |
| Halloween | | Unisex | Hebrew |
| Hamish | Equivalent of Jacob - To fill the place of another. | Male | Scottish |
| Hannah | From Anne - Full of grace of God | Female | Hebrew |
| Hardy | Daring
| Male | |