| Meaning | fair, white |
| Origin | Celtic, Gaelic, Irish, Scottish |
| Gender | Boy |
| Popularity | Moderate |
| Length | 5 |
| Syllables | 2 |
| Syllabification | Fi-onn |
Ancient yet vibrant, this name carries the mystique of legendary tales and heroic traditions. It possesses a lyrical quality that appeals to those who appreciate linguistic beauty and historical depth. The unique spelling distinguishes it immediately, though pronunciation remains straightforward once learned. Fionn works particularly well for families with connections to Celtic heritage, offering a meaningful nod to ancestral roots. The name suggests creativity, wisdom, and a free spirit—someone destined for adventures and original thinking. Its rarity in most regions guarantees your child will likely be the only Fionn in their class, providing distinctiveness that builds character and confidence. The flowing sounds create an almost musical quality when spoken aloud.
| Finn |
| Flynn |
| Finnian |
| Finnegan |
| Felix |
| Francis |
| Frank |
| Frederick |
| Franklin |
| Fabian |
| Fernando |
| Fletcher |
| Finn |
| Fi |
| Ion |
| Fio |
| Finny |
| Fionn Whitehead | British actor known for his role in the movie "Dunkirk" |
| Fionn Regan | Irish singer-songwriter |
| Fionn Carr | Irish rugby union player |
| Fionn McDonagh | Irish professional boxer |
| Fionn O'Shea | Irish actor |
| Fionn Reilly | Irish professional footballer |
| Fionn MacDiarmid | Irish-born American photographer |
| Fionn mac Cumhaill | Legendary Irish hero in Celtic mythology |
| Fionn Whitehead | Character in the TV series "Black Mirror" |
| Fionn MacCool | Character in Irish folklore and mythology |
| Fionn Shea | Character in the book "The Secret of Kells" |
| Fionn Collins | Character in the TV series "Reign" |
| Fionn Wallace | Character in the TV series "Teen Wolf" |
| Fionn James | Character in the TV series "Humans" |
| Fionn Lagin | Character in the novel "The Last Unicorn" by Peter S. Beagle |
| Fionn FitzGerald | Character in the TV series "Lost Girl" |
| Fionn Turner | Character in the TV series "The Blacklist" |
| Fionn mac Tíre | Character in the novel "Warrior of the Altaii" by Robert Jordan |
| Fionn Pendergast | Character in the TV series "Young Dracula" |
| Fionn Boyle | Character in the book "The Storm Keeper's Island" by Catherine Doyle |
| Fionn Harverson | Character in the TV series "The Fall" |
| Fionn Cooper | Character in the TV series "Holby City" |
| Fionn Adams | Character in the TV series "Harrow" |
| Fionn Ballard | Character in the TV series "Humans" |
| Fionn Sheehan | Character in the TV series "River City" |
| Fionn Potts | Character in the TV series "Father Brown" |