| Name | Meaning | Gender | Origin |
|---|
| Finn | Blond
| Male | Irish |
| Fluffy | Covered with fluff, Soft, light and airy. | Unisex | |
| Foster | forest keeper | Male | Occupational |
| Freckles | Dotted with small brownish spots. | Unisex | |
| Freo | | Unisex | Hebrew |
| Gabby | Strength Of God | Unisex | English |
| Galileo | from Galilee | Male | Italian |
| Garfield | Famous comis strip character. English: From the triangular field.
| Male | English |
| 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 |
| Gibbs | | Unisex | Hebrew |
| Gismo | | Unisex | Hebrew |
| Gizmo | A mechanical device or gadget. | Unisex | |
| Gus | From Gustave - Staff of the Goths | Male | English |
| Harlequin | | Unisex | Hebrew |
| Harry | estate ruler | Male | English |
| Harry | estate ruler | Male | English |
| Higgins | Intelligent
| Male | |
| Hobo | A homeless person | Unisex | |
| Hobo | A homeless person | Unisex | |
| Hollie | Holly | Unisex | English |
| Holstein | | Unisex | Hebrew |
| Humdinger | | Unisex | Hebrew |
| Hunter | A hunter. One who searches for something | Male | English |
| Ivan | Form of John | Male | Russian |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |