The first name Fionn
A boy’s name.
1 syllable Male
Popularity
Babies registered in England and Wales, 1996–2025
In 2025, 55 boys were named Fionn, making it the 658th most popular boys’ name. It peaked in 2022, with 69 births (#555).
GirlsBoys
1,070
babies named Fionn, 1996–2025
#658
rank in 2025
2022
peak year
Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Fionn with other names.
Popularity in the United States
Babies named Fionn at birth, 1880–2025
In 2025, 25 boys born in the United States were named Fionn, the 4,171st most popular boys’ name that year. It was used most in 2018, when 40 were.
682
babies named Fionn since 1880
#4,171
rank in 2025
2018
peak year
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Questions
- How popular is the name Fionn?
- In 2025, 55 boys born in England and Wales were named Fionn, ranking 658th. Its peak was 2022, with 69 births.
- Is Fionn a boy's or a girl's name?
- Mostly a boy's name: 100% of the 682 US babies named Fionn since 1880 were boys.
- When was Fionn most popular?
- 2018 in the United States, when 40 babies were named Fionn, its highest rank at 2,964th.