| Fabian |
| Fabio |
| Fabricio |
| Faelan |
| Faelon |
| Faolan |
| Faris |
| Fearghal |
| Fechete |
| Feidhlim |
| Feliks |
| Felipe |
| Felix |
| Fenton |
| Ferdia |
| Fergal |
| Fergus |
| Fiach |
| Fiachna |
| Fiachra |
| Fiann |
| Fianna |
| Filip |
| Filipe |
| Finbar |
| Finian |
| Finlay |
| Finley |
| Finn |
| Finnian |
| Fintan |
| Fionn |
| Fionnan |
| Fionnbar |
| Fionntan |
| Fiontan |
| Fletcher |
| Flynn |
| Ford |
| Foster |
| Francis |
| Frank |
| Frankie |
| Franklin |
| Fraser |
| Frazer |
| Frazier |
| Freddie |
| Freddy |
| Frederick |
| Frey |
| Fynlee |
| Fynndlay |