Ïu
given name · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
Ïu is a given name written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 2M(measured from records)
- BEBelgium1 in 3.9M
- CRCosta Rica1 in 5.1M
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 38 (measured from records)
- 1 in 2.0M (inferred from the name graph)
167 people, 2010
Highest-authority source
United States
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Iu in US United States, BR Brazil, FR France and 2 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)
@ 间 人 沈 氏 为 避 竟 王 审 知 讳 ,去 水 为 无 , 见 《 续 文 献 通 考 》(19,21)。 四 无 为 尤 的 古 体 字 (85) ,或 系 尤 氏 所 改 (62) 。 见 《万 姓 统 谱 》( 15 ， 63) 。
Sources 2
- 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples)
- Chinese Surnames Dictionary (Section 1)
Attested across 13 languages in the etymology graph.
Where in the world(measured from records)
Ïu 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 | 167 | 1 in 2M | 176 | Iu | 20 |
| BE Belgium | 3 | 1 in 3.9M | 3 | — | — |
| CR Costa Rica | 1 | 1 in 5.1M | 1 | — | 3 |
| BR Brazil | — | — | — | Iu | 14 |
| FR France | — | — | — | Iu | 27 |
| PT Portugal | — | — | — | Iu | 8 |
| HK Hong Kong | — | — | — | Iu | 6 |
167 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; Familienaam.be — Belgian family-name frequency (population register); TSE — electoral roll (padrón) names. 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
- Is Ïu a male or female name?
- Ïu 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 Ïu have the most bearers?
- In the United States, the national register counted about 167 people named Ïu, more than in any other country we hold, where it is most often spelled iu.
- Where is Ïu most common?
- Ïu is densest in the United States, where the national register counts about 1 in 2.0 million people carrying it.
- How common is the name Ïu?
- In the United States, the national register counted 167 people named Ïu in 2010, about 1 in 2.0 million residents.
What do you want to know about Ïu?
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/%C3%AFuThe 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, “Ïu”. Data snapshot 2026-10-10.