Kierán
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Kierán is a male given name written in the Latin script, with more bearers in the United Kingdom than in any other country. Recorded meaning: From the Irish Gaelic personal name Ciarán, literally little dark one.
- IEIreland≈1 in 1.2K(inferred from the name graph)
- GBUnited Kingdom≈1 in 2.7K
- AUAustralia≈1 in 3.6K
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.
- United Kingdom (inferred from the name graph)
- 2 (measured from records)
- Record sources
- 407 (measured from records)
- ≈1 in 1.2K (inferred from the name graph)
≈25,000 people, est.
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Ireland, est.
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Kieran in GB United Kingdom, US United States, AU Australia and 3 more.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin
(measured from records)From the Irish Gaelic personal name Ciarán, literally little dark one.
Cited for this meaning 8
- A concise dictionary of first names
- A dictionary of surnames
- DUDEN Lexikon der Vornamen
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
Attested across 18 languages in the etymology graph.
Where in the world
(measured from records)Kierán 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 | ||||
|---|---|---|---|---|---|---|
| GB United Kingdom | #332 | ≈25,000 est. | ≈1 in 2.7K | 16 | Kieran | 303 |
| US United States | — | 15,306 | 1 in 22K | 14K | Kieran | 407 |
| AU Australia | #502 | ≈7,200 est. | ≈1 in 3.6K | 95 | Kieran | 204 |
| IE Ireland | #112 | ≈4,300 est. | ≈1 in 1.2K | 25 | Kieran | 160 |
| CA Canada | — | ≈1,200 est. | ≈1 in 30K | 12 | Kieran | 184 |
| NZ New Zealand | #373 | ≈930 est. | ≈1 in 5.3K | 10 | Kieran | 129 |
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: NRS — Baby names Scotland full list (1974–present); Census Bureau — First Name Frequency 2020 by sex; NSW BDM — Popular baby names (1952–present); CSO — Irish Babies Names (1998–present); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; DIA — Baby name popularity (1900–present). 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).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- What does the name Kierán mean, and where does it come from?
- From the Irish Gaelic personal name Ciarán, literally little dark one. Recorded by A concise dictionary of first names and A dictionary of surnames and 6 other sources.
- Is Kierán a male or female name?
- Kierán 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 Kierán have the most bearers?
- Mondonomo estimates about 25 thousand people named Kierán in the United Kingdom, more than in any other country we hold, where it is most often spelled kieran.
- How common is the name Kierán?
- In the United States, the national register counted 15,306 people named Kierán in 2020, about 1 in 22 thousand residents.
- How common is Kierán compared with other names?
- In the United Kingdom, Kierán is the 332nd most common given name of 404,737 given names recorded there.
What do you want to know about Kierán?
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/kier%C3%A1nThe 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, “Kierán” — the 332nd most common given name in United Kingdom. Data snapshot 2026-10-13.