Iu

surname · Latin script

Meaning, in Vietnamese: eye dialect spelling of yêu, representing Southern Vietnam Vietnamese

Recorded as a male name· opposite-gender records fall within measured source noise

/ju/(machine-generated) pronunciation, model-generated

Iu is a surname written in the Latin script, most frequently recorded in Spain.

Spellings & scripts(measured from records)

7 other spellings are counted as the same name:

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)

eye dialect spelling of yêu, representing Southern Vietnam Vietnamese

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested in 1 language in the etymology graph.

How Iu is read(measured from records)

Iu is one spelling over 3 language communities, and the dictionaries record it differently in 2 of them. Each row is what a source recorded for that language, beside the share of this name’s records the language holds. No single row is the name’s meaning.

  • English38%

    No dictionary in our sources glosses Iu in English.

  • Chinese17%

    Useful

    as a wordrecorded as wuuAn English-Chinese Vocabulary of the Shanghai Dialect

    This

    as a wordrecorded as wuuAn English-Chinese Vocabulary of the Shanghai Dialect

  • Vietnamese13%

    eye dialect spelling of yêu, representing Southern Vietnam Vietnamese

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

The share is ours — how much of this name’s records each language holds. The sense beside it is the source’s, quoted and credited, including where it names a gender. We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.

Where in the world(measured from records)

Iu counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Where Iu is recorded, by country
CountryMost common spelling
ES Spain—676—
US United States—176—
BE Belgium—3—
CR Costa Rica—1—
EC Ecuador—1—

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: INE — Padrón per-token widgets (current living counts, given + apellidos); Census Bureau — Surname Frequency 2020; Familienaam.be — Belgian family-name frequency (population register); TSE — electoral roll (padrón) names; INEC — Visualizador de Nombres y Apellidos, per-token query API (1900–2024). 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 names spelled this way(inferred from the name graph)

Iu is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • English surname20 spellings in the group

    Most recorded in United States, Australia, Hong Kong, Canada

    Languages: English, German, Dutch

    Also written Iue, I'U, I-U, I͡u, I︠u︡

  • Spanish surname19 spellings in the group

    Most recorded in Brazil, France, United States, Mexico

    Languages: Spanish, Portuguese, French

    Also written Ïu, Ỉu, Iú, I︠u︡, Iü

  • Russian given name25 spellings in the group

    Most recorded in Russia, Belarus, India, Ukraine

    Languages: Russian, Ukrainian

    Also written I︠u︡, Иу, Йу, I͡u, Іу

  • a separate surname11 spellings in the group

    Most recorded in United States, India, China

    Also written Ịu, Îü, Ïü, Ĩu, Îu

50 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses(measured from records)

Iu is also recorded in 3 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Spanish, initialism of Izquierda Unida

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In cdo, means, to follow, to come of from, by, through, to let, (li-ia)

    as a wordDictionary of the Foochow Dialect

  • In cdo, to go on the water, a place, that that which, a euphonic particle, distant (4&)

    as a wordDictionary of the Foochow Dialect

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)

12001400160018002000Yao Guang Xiao, b. 1335Yao Lee, b. 1922Yao Wenyuan, b. 1931Yao Chia-wen, b. 1938Andrew Chi-Chih Yao, b. 1946Frances Yao, b. 1950Claire Yiu, b. 1978Yao Chen, b. 1979Yao Ming, b. 1980Yao Xingtong, b. 1983
  • Yao Guang Xiaob. 1335CNnot in their usual nameMing dynasty person CBDB = 35140 (1335–1418)
  • Yao Leeb. 1922CNnot in their usual nameChinese singer (1922-2019)
  • Yao Wenyuanb. 1931CNnot in their usual nameChinese politician (1931–2005)
  • Yao Chia-wenb. 1938TWnot in their usual nameTaiwanese politician
  • Andrew Chi-Chih Yaob. 1946CNnot in their usual namecomputer scientist and computational theorist
  • Frances Yaob. 1950USnot in their usual nameChinese-born American computer scientist
  • Claire Yiub. 1978CNnot in their usual nameHong Kong actress
  • Yao Chenb. 1979CNnot in their usual nameChinese actress
  • Yao Mingb. 1980CNnot in their usual nameChinese basketball player (born 1980)
  • Yao Xingtongb. 1983CNnot in their usual nameChinese actress

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)

FormalDear Colleague,
InformalHello,

Evidence(measured from records)

Attested in 11 sources across 5 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 Iu mean, and where does it come from?
eye dialect spelling of yêu, representing Southern Vietnam Vietnamese Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Iu?
A machine transcription gives /ju/ (IPA) for English.
In which country does Iu have the most bearers?
Iu is most frequently recorded in Spain.

What do you want to know about Iu?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Please leave out anyone's personal details (see Privacy).

Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/iu

The 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, “Iu”. Data snapshot 2026-10-10.

See how Iu parses inside a full name →