Given name
Fionn
“a fair-haired man”·“one who is fair; a whiteshouldered woman”
Fionn is a variant of Finbar. One Irish interpretation is “a fair-haired man.” Fionn is a variant of Fiona. One interpretation is “one who is fair; a whiteshouldered woman.”
Meaning & origin
What it means
Fionn is a variant of Finbar. One Irish interpretation is “a fair-haired man.” Fionn is a variant of Fiona. One interpretation is “one who is fair; a whiteshouldered woman.”
Explained through its name family
Where it comes from
Fionn is a variant of Finbar. An origin associated with Finbar is Irish.
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1973. This is the earliest published observation available here, rather than a date for the name’s origin. Fionn is a variant of Fiona. The history of Fiona gives this family its wider story. James Macpherson is credited with first using Fiona. The writer William Sharp later adopted Fiona Macleod as a pen name, adding another literary chapter to its history.
Combines direct and name-family evidence
Fionn through the years
- Babies since 1880
- 682
- 682 boys · 0 girls
- Most popular year
- 2018
- 40 babies
- 2025
- 25
- #4,171 for boys
- 2021–25 vs 2016–20
- −3%
- Steady
By the numbers
In 2025, this name appeared in 25 U.S. birth records for boys, ranking No. 4,171 among boys’ names. Average annual use for boys was 2.7% lower in 2021–2025 than in 2016–2020. Published U.S. population figures for this spelling include 583 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Fionn’s family of names
In Irish usage, Fionn has a later derivative in Fiona. Fionn has a related form in Finbar. Fionn has a related form in Fiona.
Inner ring: spellings · outer: nicknames and forms.
Around the world
Fionn has relatives in 4 languages.
1 related names in 4 languages. Point at a dot, or tab to the map and use the arrow keys.
Nicknames & forms 2
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 1
The same name written differently, including transliterations into other scripts.
People named Fionn
- Fionn O'SheaIrish actorborn 1997
- Fionn McLaughlinIrish racing driver (born 2007)
- Fionn ReganIrish folk musician and singer-songwriterborn 1979
- Fionn GriffithsBritish bicycle racerborn 1982
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Fionn, these share its style, era, origin or sound, from outside its own family.