| Name | Meaning | Gender | Origin |
|---|
| Fatz | | Unisex | Hebrew |
| Fitz | Son of
| Male | English |
| Fluffy | Covered with fluff, Soft, light and airy. | Unisex | |
| Furball | | Male | Hebrew |
| Garf | | Unisex | Hebrew |
| Garfeild | | Unisex | Hebrew |
| Garfield | Famous comis strip character. English: From the triangular field.
| Male | English |
| Garth | Garden.
| Male | Norse |
| George | Farmer. In medieval legend St. George: (the knight who became patron saint of England) struggled with a fire-breathing dragon symbolizing the Devil.
| Male | Greek |
| Gibby | | Unisex | Hebrew |
| Giga | | Unisex | Hebrew |
| Gizmo | A mechanical device or gadget. | Unisex | |
| Godzilla | | Male | Hebrew |
| Gordo | | Unisex | Hebrew |
| Gordon | from the cornered hill | Male | Scottish |
| Gotti | | Unisex | Hebrew |
| Griffin | strong lord | Male | Welsh |
| Guido | guide, leader | Male | Italian |
| Ham | A cut of meat. Also an actor who overacts or exaggerates. | Male | Hebrew |
| Happy | Showing satisfaction or joy | Female | English |
| Henry | ruler of the home | Male | |
| Hippo | | Unisex | Hebrew |
| Homer | promise | Male | Greek |
| Howard | guardian of the home, watchman | Male | |
| Hugo | Intelligent
| Male | Latinized |