Fionn
given name · Latin script
Meaning: F 1 DENCIO
Recorded as a male name· opposite-gender records fall within measured source noise
/fʲiown/(machine-generated) pronunciation, model-generated
Fionn is a given name written in the Latin script, with more bearers in Ireland than in any other country.
- USUnited States1 in 571K(measured from records)
- IEIreland≈1 in 7.2K
- SGSingapore≈1 in 133K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.
- Ireland (inferred from the name graph)
- Sources
- 116 (measured from records)
- ≈1 in 7.2K (inferred from the name graph)
≈720 people, est.
Highest-authority source
Ireland, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
F 1 DENCIO
Sources 1
- 25,000 nombres de bebé. La mejor guía para escoger el nombre adecuado
Attested across 11 languages in the etymology graph.
Often considered alongside
Names that people choosing a name often weigh against Fionn, most often first. They share a style rather than an origin.
From the names suggested together in public name-advice forums, in English. A list of what people consider, not a measure of how common any name is.
Where in the world(measured from records)
Fionn counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| IE Ireland | #381 | ≈720 est. | ≈1 in 7.2K | 291 | Fionn | 81 |
| US United States | — | 583 | 1 in 571K | 559 | Fionn | 116 |
| GB United Kingdom | — | ≈250 est. | ≈1 in 262K | 43 | Fionn | 106 |
| DE Germany | — | ≈150 est. | ≈1 in 532K | 1 | Fionn | 56 |
| AU Australia | — | ≈130 est. | ≈1 in 195K | 3 | Fionn | 46 |
| SG Singapore | — | ≈47 est. | ≈1 in 133K | — | Fionn | 18 |
| FI Finland | — | 30 | 1 in 186K | 38 | — | 2 |
| IS Iceland | — | 2 | 1 in 175K | 2 | — | — |
Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Census Bureau — First Name Frequency 2020 by sex; NISRA — Baby names Northern Ireland full list (1997–present); CSO — Irish Babies Names (1998–present); Australian national given names (aggregated state BDM); the de-duesseldorf-vornamen register; DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses(measured from records)
Fionn is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Scottish Gaelic, fair (of hair or complexion))
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Fionn MacCollab. 1906GBBritish writer; (1906-1975)
- Fionn Murtaghb. 1954IEresearcher
- Fionn Reganb. 1979IEIrish folk musician and singer-songwriter
- Fionn Griffithsb. 1982GBBritish bicycle racer
- Fionn Fitzgeraldb. 1990IEIrish Gaelic football player
- Fionn O'Sheab. 1997IEIrish actor
- Fionn Handb. 1998IEIrish cricketer
- Fionn Ferreirab. 2001IEIrish chemist
- Fionn P.E. Dunneresearcher ORCID ID = 0000-0002-4295-3948
- Fionn Amhairghen Ballresearcher in particle physics
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
How to address them(machine-generated)
A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence(measured from records)
Attested in 36 sources across 20 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 559 | #18,480 |
| IE Ireland | CSO — Irish Babies Names (1998–present) | 2019 | 291 | #16 |
| GB United Kingdom | NISRA — Baby names Northern Ireland full list (1997–present) | 2025 | 43 | #44 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 38 | #8,394 |
| FI Finland | DVV — Etunimitilasto (Finnish given names register) | — | 30 | — |
| US United States | SSA — National Baby Names (1880–present) | 2025 | 25 | — |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 24 | #18,480 |
| GB United Kingdom | NRS — Baby names Scotland full list (1974–present) | 2024 | 11 | #330 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 10 | #41,178 |
| AU Australia | Australian national given names (aggregated state BDM) | 2011 | 3 | — |
| GB United Kingdom | NRS — Baby names Scotland full list (1974–present) | 1998 | 3 | #664 |
| IS Iceland | Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry) | 2026 | 2 | — |
Reference works 2
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- How do you pronounce Fionn?
- A machine transcription gives /fʲiown/ (IPA) for English.
- What are other forms of the name Fionn?
- In the etymology graph, Gwyn, Wyn and Fion are forms of the same name in other languages; Fionnán and Finnán are recorded short or pet forms.
- What does the name Fionn mean, and where does it come from?
- F 1 DENCIO Recorded by 25,000 nombres de bebé. La mejor guía para escoger el nombre adecuado.
- Is Fionn a male or female name?
- Fionn is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- In which country does Fionn have the most bearers?
- Mondonomo estimates about 718 people named Fionn in Ireland, more than in any other country we hold, where it is most often spelled fionn.
- How common is the name Fionn?
- In the United States, the national register counted 583 people named Fionn in 2020, about 1 in 571 thousand residents.
- How common is Fionn compared with other names?
- In Ireland, Fionn is the 381st most common given name of 14,976 given names recorded there.
What do you want to know about Fionn?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/fionnThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Fionn” — the 381st most common given name in Ireland. Data snapshot 2026-10-10.