Fionn
How to say it: FIN · /fɪn/
Irish from Old Irish 'fionn' meaning 'fair, white' - legendary hero Fionn mac Cumhaill in Irish myth.
Fionn was the 222nd most popular boys’ name in the United States in 2025, given to 25 babies (Social Security Administration). Its busiest decade was the 2010s, its births are down about 12% in ten years, and it is projected to slip to #263 by 2030.
Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #222 |
|---|---|
| Babies born in 2025 | 25 |
| Share of births | 1 in 1,850 |
| Peak decade | 2010s |
| Change over 10 years | −12% |
| Projected rank for 2030 (estimate) | #263 |
| In France, 2025 | #813 among boys’ names, 0 births |
Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.
Its life, decade by decade
Fionn is a newcomer: almost all of its history is from the last forty years.
What goes with it
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Fionn is about 1 in 78.
Around the world
This spelling is used in English, Irish, Scottish Gaelic.
In France: #813 for boys in 2025.
Ireland: #6.
Famous people named Fionn
- Fionn O'Shea (born 1997)Irish actor
From Wikidata and Wikipedia
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