Rēgan
given name · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
Rēgan is a female given name written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: From Irish Gaelic Ó Riagáin, ‘descendant of Riagán’, a personal name of uncertain origin and meaning.
- IEIreland≈1 in 4.8K(inferred from the name graph)
- GBUnited Kingdom≈1 in 6.8K
- AUAustralia≈1 in 8.3K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 458 (measured from records)
- ≈1 in 4.8K (inferred from the name graph)
21,951 people, 2010
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 Regan in US United States, GB United Kingdom, 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 Irish Gaelic Ó Riagáin, ‘descendant of Riagán’, a personal name of uncertain origin and meaning.
Cited for this meaning 7
- 25,000 nombres de bebé. La mejor guía para escoger el nombre adecuado
- A concise dictionary of first names
- A dictionary of surnames
- Irish family names
- The Oxford Dictionary of Family Names in Britain and Ireland
Attested across 19 languages in the etymology graph.
Where in the world
(measured from records)Rēgan 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 | ||||
|---|---|---|---|---|---|---|
| US United States | — | 21,951 | 1 in 15K | 22K | Regan | 458 |
| GB United Kingdom | #706 | ≈10,000 est. | ≈1 in 6.8K | 3 | Regan | 241 |
| CA Canada | — | ≈3,600 est. | ≈1 in 11K | 4 | Regan | 163 |
| AU Australia | #846 | ≈3,300 est. | ≈1 in 8.3K | 3 | Regan | 168 |
| IE Ireland | #286 | ≈1,100 est. | ≈1 in 4.8K | — | Regan | 108 |
| NZ New Zealand | — | ≈510 est. | ≈1 in 10K | 14 | Regan | 112 |
21,951 people counted by Census Bureau — Surname Frequency 2010, 2010. 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 — Surname Frequency 2010; NISRA — Baby names Northern Ireland full list (1997–present); Australian national given names (aggregated state BDM); 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 Rēgan mean, and where does it come from?
- From Irish Gaelic Ó Riagáin, ‘descendant of Riagán’, a personal name of uncertain origin and meaning. Recorded by 25,000 nombres de bebé. La mejor guía para escoger el nombre adecuado and A concise dictionary of first names and 5 other sources.
- Is Rēgan a male or female name?
- Rēgan is a female 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 Rēgan have the most bearers?
- In the United States, the national register counted about 22 thousand people named Rēgan, more than in any other country we hold, where it is most often spelled regan.
- How common is the name Rēgan?
- In the United States, the national register counted 21,951 people named Rēgan in 2010, about 1 in 15 thousand residents.
- How common is Rēgan compared with other names?
- In Ireland, Rēgan is the 286th most common surname of 73,729 surnames recorded there.
What do you want to know about Rēgan?
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/r%C4%93ganThe 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, “Rēgan” — the 286th most common surname in Ireland. Data snapshot 2026-10-13.