| Name | Meaning | Gender | Origin |
|---|
| Farnsworth | | Unisex | Hebrew |
| Felini | | Unisex | Hebrew |
| Felix | Lucky
| Male | Latin |
| Fergus | First choice: Man of strength.
| Male | Scottish |
| Ferris | Rock
| Male | Irish |
| Figaro | | Male | Hebrew |
| Finn | Blond
| Male | Irish |
| Finnegan | fair. Finians were warrior-followers of 3rd century legendary Irish hero Finn Mac Cumhail.
| Male | Irish |
| Fluffy | Covered with fluff, Soft, light and airy. | Unisex | |
| Foo | | Unisex | Hebrew |
| Foster | forest keeper | Male | Occupational |
| Fox | A carnivorous mammal, related to the Dog, that has a long bushy tail. | Male | Animal |
| Frac | companion to Fric | Unisex | |
| Fran | Of France | Male | English |
| Frank | Free | Male | English |
| Frankie | Diminutive of Frank Free: a free man. Frankie is occasionally used for girls.
| Male | |
| Fric | | Unisex | Hebrew |
| Frik | | Unisex | Hebrew |
| Frisco | Abbreviation of Francisco Free: a free man.
| Male | English |
| Gabby | Strength Of God | Unisex | English |
| Gadget | | Male | Hebrew |
| Gaius | Rejoicer | Male | Welsh |
| Galileo | from Galilee | Male | Italian |
| Gandy | | Male | Hebrew |
| Garfunkel | | Male | |