| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| FionnÁN | - | Irish | ||
| Fionnbarra | - | Irish | ||
| Fionnbharr | FIN-var | Irish | ||
| Fionnghuala | - | Irish, Scottish, Irish Mythology | ||
| Fionnlagh | - | Irish, Scottish | ||
| Fionntan | - | Irish, Scottish | ||
| Fionnuala | - | Irish, Irish Mythology | ||
| Fionola | - | Irish, Scottish | ||
| FlaithrÍ | - | Irish | ||
| Flann | FLAN | Irish | ||
| FlannÁN | - | Irish | ||
| Florry | - | Irish | ||
| Flurry | - | Irish |