Fionn is a distinctive choice, ranked #757 in 2024. Your child is likely to be the only Fionn in their class.
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UK Rank 2024
#757
About the Name Fionn
Fionn has seen a notable decline in recent years, dropping 156 places in five years. It was most popular in 2022 at #555 — parents choosing it today are making a deliberately counter-trend decision. The name has been a consistent presence in UK records since 1996.
Fionn is distinctive enough that your child will likely be the only one in both their class and their school — standing out on every register.
Frequently Asked Questions
Common questions about the name Fionn
Unlikely. With around 45 UK babies named Fionn per year, your child will almost certainly be the only Fionn in his class, and possibly the only one in the whole school.
Fionn has been declining in UK popularity, dropping 156 places in the last five years. Its peak was #555 in 2022. Choosing it now means he is likely to be among the last of his generation with this name.
Fionn is a distinctive choice sitting outside the mainstream UK top names. Parents choosing less common names often find their children appreciate the individuality as they grow up, rarely needing to add an initial to distinguish themselves.
Notable people named Fionn include: Fionn Carr — Fionn Carr is a former Irish rugby union player.; Fionn mac Cumhaill — Fionn mac Cumhaill(alternatively spelled Finn mac Cumhaill), sometimes anglicised Finn McCool or MacCool, is a hero in Irish mythology, as well as in later....
Fionn does not appear in the US top 1,000 baby names, making it a distinctively British choice — your child is unlikely to encounter American Fionns in the wild.
45
UK babies named Fionn (2024)
< 1
Expected classmates with this name (class of 28)
~0.0
In a school of 600
↓ 156 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Fionn
Likely around 1 other Fionn in the class
UK Popularity (1996–2024)
Rank and birth count · ONS official data
No US data available for this name
✨ Similar names to Fionn
Names with a similar style — each with their own classroom story
Fionn mac Cumhaill(alternatively spelled Finn mac Cumhaill), sometimes anglicised Finn McCool or MacCool, is a hero in Irish mythology, as well as in later Scottish and Manx folklore. He is the leader of the Fianna bands of young roving hunter-warriors, as well as being a seer and poet.