| Name | Meaning | Gender | Origin |
|---|
| Gael | Joyful. Abbreviation Of Abigail. Gael Is A Term For Descendants Of The Ancient Celts In Scotland: Ireland And The Isle Of Man. | Unisex | English |
| Galen | Calm | Male | Greek |
| Genesis | Beginning | Male | Greek |
| Genie | Of noble descent | Unisex | Greek |
| Gent | Gentleman | Male | English |
| Giles | Shield | Male | Greek |
| Gizmo | A mechanical device or gadget. | Unisex | English |
| Godzilla | | Unisex | Hebrew |
| Goliath | Tall | Unisex | Hebrew |
| Guy | Guide | Male | French |
| Hagrid | | Unisex | Hebrew |
| Hairy | | Unisex | Hebrew |
| Harley | Hare clearing | Male | English |
| Harry | Home ruler | Male | Germanic |
| Hartley | Hart wood | Male | English |
| Harvey | Battle worthy or carnage worthy | Male | English |
| Henry | Home ruler | Male | Germanic |
| Hercules | Grandiose gift | Male | Greek |
| Hubert | Bright mind | Male | Germanic |
| Igor | Warrior archer | Male | Norse |
| Ireland | Land of Ériu | Unisex | English |
| Jabba | | Unisex | Hebrew |
| Jagger | Pedlar | Male | English |
| Jasper | Treasurer | Male | Persian |
| Jaws | Bones that form the mouth. A dangerous situation - "The Jaws of Death" | Unisex | English |
| Jester | A fool at medieval courts | Unisex | English |
| Jett | Black gemstone | Male | English |
| Jimmy | Supplanter | Male | Hebrew |
| Jupiter | Father god | Unisex | Latin |
| Keagan | Son of Aodhagáin | Male | Gaelic |