Joó
surname · Latin script
Recorded for both men and women· direction only, no split published
/d͡ʒoo/(machine-generated) pronunciation, model-generated
Joó is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Borrowed from Korean 주 (ju).
- HUHungary≈1 in 12K(inferred from the name graph)
- HRCroatia1 in 94K
- USUnited States1 in 107K
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 States (measured from records)
- Sources
- 71 (measured from records)
- ≈1 in 12K (inferred from the name graph)
3,121 people, 2010
Highest-authority source
Hungary, 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 Joo in US United States.
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)
Borrowed from Korean 주 (ju).
Sources 2
- Dictionary of American Family Names
- Wiktionary
Attested across 22 languages in the etymology graph.
Where in the world(measured from records)
Joó 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.
3,121 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; Census Bureau — Surname Frequency 2020; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); IBGE — Nomes (census name API); RENAPER — Apellidos (person counts, national); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); DZS — Imena i prezimena (per-token lookup form); DVV — Nimipalvelu (Finnish name service, per-name lookup); SSB — Navnesøk (name-search service, living population). 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).
Notable people with this name(measured from records)
- Tibor Joób. 1901HUHungarian historian
- Rudolf Joób. 1946HUHungarian diplomat (1946-2002)
- Árpád Joób. 1948US(1948-2014) Hungarian born conductor
- István Joób. 1948HUHungarian mathematician (1948-1998)
- Ferenc Joób. 1949HUHungarian physicist and chemist
- Zoltán Joób. 1956HUHungarian painter
- Gábor Joób. 1986HUHungarian voice actor
- Abigél Joób. 1990HUHungarian judoka
- Linda Joób. 2003HUHungarian female curler
- Vilma BallaHUnot in their usual nameHungarian Righteous Among the Nations
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 6 sources across 3 countries.
Reference works 2
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- 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 Joó mean, and where does it come from?
- Borrowed from Korean 주 (ju). Recorded by Dictionary of American Family Names and Wiktionary.
- How do you pronounce Joó?
- A machine transcription gives /d͡ʒoo/ (IPA) for Hungarian.
- In which country does Joó have the most bearers?
- In the United States, the national register counted about 3.1 thousand people named Joó, more than in any other country we hold, where it is most often spelled joo.
- How common is the name Joó?
- In the United States, the national register counted 3,121 people named Joó in 2010, about 1 in 107 thousand residents.
- How common is Joó compared with other names?
- In Hungary, Joó is the 656th most common surname of 88,284 surnames recorded there.
What do you want to know about Joó?
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/jo%C3%B3The 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, “Joó” — the 656th most common surname in Hungary. Data snapshot 2026-10-10.