Baby Names of Ireland

Fionn: Meaning, Pronunciation and Origin

Fionn is an Irish boy's name meaning “fair-headed.” Here’s how to say it, where it comes from, and names that go well with it.

Updated September 2026

How to say it
FINOne syllable
Meaning
Fair-headed
Gender
Boy
Also spelled
Finn
Popularity in Ireland
No. 6 for boys (2025)

How do you pronounce Fionn?

Fionn is pronounced FIN. It has one syllable. Other spellings: Finn.

Hear Fionn said aloud, with its meaning (36 seconds, Baby Names of Ireland on YouTube).

What does Fionn mean?

Means “fair-headed”. Fionn Mac Cool, a central character in Irish folklore and mythology lead the warrior band, the Fianna. Fionn was not only incredibly strong but he was also extremely brave, handsome, generous and wise, a wisdom he acquired by touching the “Salmon of Knowledge” and then sucking his thumb. The name is popular in Ireland with both spellings Fionn and Finn.

Fionn in Irish legend

Grainne was the daughter of Cormac MacAirt, the high king of Ireland. No woman could compare to her beauty.

Read The Pursuit of Diarmuid and Gráinne

Finegas was a poet. He was one of the wisest men in Ireland.

Read The Legend of the Salmon of Knowledge

In 2025, 321 baby boys in Ireland were named Fionn, which made it No. 6 that year. Another 15 were registered as Fíonn. That's up from No. 19 ten years earlier. The most babies got the name in 2020: 353. It first appears in the records in 1971, with 5 baby boys.

0200400197019801990200020102020353 in 2020336 in 2025
Baby boys named Fionn each year, all spellings (Fionn, Fíonn). Source: Central Statistics Office, Irish Babies’ Names 2025 (data: table VSA50, boys' names, CC BY 4.0).
See the numbers by year
YearBabiesRank
2025336No. 6 (Fionn)
2024313No. 7 (Fionn)
2023329No. 6 (Fionn)
2022307No. 11 (Fionn)
2021304No. 14 (Fionn)
2020353No. 8 (Fionn)
2019311No. 16 (Fionn)
2018318No. 14 (Fionn)
2017314No. 14 (Fionn)
2016308No. 21 (Fionn)
2015325No. 19 (Fionn)
2014270No. 26 (Fionn)
2013304No. 25 (Fionn)
2012292No. 27 (Fionn)
2011255No. 30 (Fionn)
2010265No. 35 (Fionn)
2009249No. 34 (Fionn)
2008239No. 35 (Fionn)
2007246No. 32 (Fionn)
2006195No. 39 (Fionn)
2005184No. 38 (Fionn)
2004172No. 41 (Fionn)
2003102No. 66 (Fionn)
200299No. 66 (Fionn)
200194No. 68 (Fionn)
200090No. 64 (Fionn)
199947No. 97 (Fionn)
199847No. 91 (Fionn)
199750No. 99 (Fionn)
199654No. 104 (Fionn)
199540No. 119 (Fionn)
199427No. 139 (Fionn)
199329No. 132 (Fionn)
199218No. 167 (Fionn)
199121No. 154 (Fionn)
199029No. 139 (Fionn)
198913No. 177 (Fionn)
198816No. 166 (Fionn)
198715No. 172 (Fionn)
198610No. 203 (Fionn)
198510No. 194 (Fionn)
198410No. 197 (Fionn)
19838No. 214 (Fionn)
19824No. 286 (Fionn)
19817No. 239 (Fionn)
19805No. 264 (Fionn)
19787No. 231 (Fionn)
19765No. 258 (Fionn)
19754No. 290 (Fionn)
19723No. 307 (Fionn)
19715No. 257 (Fionn)

Fionn in Ogham

Ogham is the oldest way of writing Irish. It was carved along the edges of standing stones, mostly between the 4th and 6th centuries, and read from the bottom up. In later tradition each letter was named after a tree or plant. Here’s Fionn, letter by letter.

᚛ᚃᚔᚑᚅᚅ᚜
  1. FFearn, alder
  2. IIodhadh, yew
  3. OOnn, gorse
  4. NNion, ash
  5. NNion, ash

Write any name in Ogham with our Ogham translator

Names that go with Fionn

Questions about Fionn

How do you pronounce Fionn?
Fionn is pronounced FIN. One syllable. There's a short video above where you can hear it said.
What does Fionn mean?
Fionn means “fair-headed.”
Is Fionn a girl's name or a boy's name?
Fionn is a boy's name.
How popular is Fionn in Ireland?
In 2025, Fionn was No. 6 for boys in Ireland, with 321 babies, according to the Central Statistics Office. That's the highest it has ever ranked.