| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Felim | - | Irish | ||
| Fergal | - | Irish | ||
| Fergus | FUR-gəs (English) | Irish, Scottish, Irish Mythology | ||
| Fiachna | - | Irish | ||
| Fiachra | FEE-akh-ra | Irish, Irish Mythology | ||
| Fidelma | fi-DEL-ma | Irish | ||
| Fillin | - | Irish | ||
| Finbar | FIN-bar | Irish | ||
| Finbarr | FIN-bar | Irish | ||
| Finlay | - | Irish, Scottish, English | ||
| Finley | - | Irish, Scottish, English | ||
| Finn (1) | - | Irish Mythology, Irish | ||
| FinnÁN | - | Irish | ||
| FinnÉN | - | Irish | ||
| FinnagÁN | - | Irish |