O'Hara
surname · Latin script
Meaning: Irish Gaelic for 'descendant of Eaghra', a personal name of unknown origin and meaning
Recorded for both men and women· direction only, no split published
/oʊˈhɛɹə/(machine-generated) pronunciation, model-generated
O'Hara is a surname written in the Latin script, with more bearers in Japan than in any other country.
- JPJapan≈1 in 4.4K(inferred from the name graph)
- IEIreland≈1 in 9.8K
- GBUnited Kingdom≈1 in 13K
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.
- Japan (inferred from the name graph)
- 3 (measured from records)
- Sources
- 380 (measured from records)
- ≈1 in 4.4K (inferred from the name graph)
≈29,000 people, est.
recorded for this name
Highest-authority source
Japan, 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 Ohara in US United States, GB United Kingdom, JP Japan and 4 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)
Irish Gaelic for 'descendant of Eaghra', a personal name of unknown origin and meaning.
Sources 1
- Encyclopedia of surnames [the complete companion to tracing your names history]
Where in the world(measured from records)
O'Hara 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 | ||||
|---|---|---|---|---|---|---|
| JP Japan | #925 | ≈29,000 est. | ≈1 in 4.4K | — | Ohara | 115 |
| US United States | — | 21,710 | 1 in 15K | 22K | Ohara | 380 |
| GB United Kingdom | #767 | ≈5,000 est. | ≈1 in 13K | 7.9K | Ohara | 162 |
| EG Egypt | — | ≈3,600 est. | ≈1 in 29K | — | Ohara | 8 |
| IT Italy | — | ≈3,000 est. | ≈1 in 21K | 1 | Ohara | 14 |
| CU Cuba | #580 | ≈970 est. | ≈1 in 11K | — | Ohara | 2 |
| IE Ireland | #307 | ≈530 est. | ≈1 in 9.8K | — | O'Hara | 77 |
| NZ New Zealand | #819 | ≈380 est. | ≈1 in 13K | — | Ohara | 51 |
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; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); ISTAT — Contanomi newborn per-name series (1999–2024, JSONP backend). 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)
O'Hara 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 English, O hEaghra; Sligo, Antrim
as a nameIrish family names
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)
- John O'Harab. 1905USnot in their usual nameAmerican journalist and writer (1905–1970)
- Maureen O'Harab. 1920IEnot in their usual nameIrish–American actress and singer (1920–2015)
- Frank O'Harab. 1926USnot in their usual nameAmerican poet, art critic and writer (1926-1966)
- Jenny O'Harab. 1942USnot in their usual nameAmerican actress
- Terrence O'Harab. 1945USnot in their usual nameAmerican actor and director (1945–2022)
- Catherine O'Harab. 1954CAnot in their usual nameCanadian-American actress (1954–2026)
- Paige O'Harab. 1956USnot in their usual nameAmerican actress
- David O'Harab. 1965GBnot in their usual nameScottish actor
- Kelli O'Harab. 1976USnot in their usual nameAmerican actress and singer
- Kelley O'Harab. 1988USnot in their usual nameAmerican soccer player
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)
Evidence(measured from records)
Attested in 17 sources across 13 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 7.9K | #1,007 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 3
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia surname 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
- What does the name O'Hara mean, and where does it come from?
- Irish Gaelic for 'descendant of Eaghra', a personal name of unknown origin and meaning. Recorded by Encyclopedia of surnames [the complete companion to tracing your names history].
- How do you pronounce O'Hara?
- A machine transcription gives /oʊˈhɛɹə/ (IPA) for English.
- In which country does O'Hara have the most bearers?
- Mondonomo estimates about 29 thousand people named O'Hara in Japan, more than in any other country we hold, where it is most often spelled ohara.
- How common is the name O'Hara?
- In the United States, the national register counted 21,710 people named O'Hara in 2010, about 1 in 15 thousand residents.
- How common is O'Hara compared with other names?
- In Japan, O'Hara is the 925th most common surname of 142,159 surnames recorded there.
What do you want to know about O'Hara?
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/o'haraThe 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, “O'Hara” — the 925th most common surname in Japan. Data snapshot 2026-10-10.