| Name | Meaning | Gender | Origin |
|---|
| Gannon | White, fair-haired | Male | Gaelic |
| Gara | Short | Male | English |
| Gareth | Uncertain, perhaps gentle | Male | Welsh |
| Garrett | Strength of the spear | Male | Germanic |
| Garvey | Cruel fate | Male | Gaelic |
| Gay | Happy | Male | English |
| Genie | Of noble descent | Unisex | Greek |
| George | Earth worker | Male | Greek |
| Gibson | Laughing | Male | English |
| Gideon | Hewer | Male | Hebrew |
| Gil | Happiness | Male | Hebrew |
| Gillespie | Servant of the bishop | Male | Gaelic |
| Gilmore | Servant of the Virgin Mary | Male | Gaelic |
| Gizmo | A mechanical device or gadget. | Unisex | English |
| Grady | Child of nobility | Male | Gaelic |
| Grant | Great | Male | French |
| Gus | From Gustave - Staff of the Goths | Male | English |
| Guthrie | Windy | Male | English |
| Hagan | Enclosure | Male | German |
| Harper | A player on the harp | Male | English |
| Harry | Home ruler | Male | Germanic |
| Harvey | Battle worthy or carnage worthy | Male | English |
| Heath | Person living on a heath or near heather | Male | English |
| Hogan | Descendent of Ogan | Male | Gaelic |
| Hugh | Mind, heart or spirit | Male | Germanic |
| Hunter | Hunter | Male | English |
| Hurley | Corner wood | Unisex | English |
| Indy | After Indiana Jones | Unisex | English |
| Jack | God is gracious | Male | Hebrew |
| Jackson | Jack's son | Male | English |