| Name | Meaning | Gender | Origin |
|---|
| Freeway | | Unisex | Hebrew |
| Friskie | | Unisex | Hebrew |
| Frisky | | Unisex | Hebrew |
| Frodo | from The Lord of the Rings | Male | Literary |
| Fruitbat | | Unisex | Hebrew |
| Fruity | | Unisex | Hebrew |
| Fudge | A soft, rich candy | Male | |
| Fuzzbutt | | Unisex | Hebrew |
| Fuzzy | | Male | Hebrew |
| Fuzzy | | Male | Hebrew |
| Gadget | | Male | Hebrew |
| Gandalf | | Male | Hebrew |
| Gary | spear carrier | Male | English |
| Gem | A mineral that has been cut and polished | Unisex | |
| Gemini | The Twins | Male | Latin |
| Genie | Of Noble Birth | Unisex | 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 |
| Ghost | A haunting spirit or memory. One who moves noiselessly. | Unisex | |
| Gideon | The destroyer; brave spirit. mighty warrior. | Male | Hebrew |
| Gilligan | | Male | Hebrew |
| Gimli | after the dwarf in Lord of the Rings | Unisex | |
| Gizmo | A mechanical device or gadget. | Unisex | |
| Godzilla | | Male | Hebrew |
| Gomez | | Male | Hebrew |
| Gomez | | Male | Hebrew |