Itô
surname · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
Itô is a surname written in the Latin script, with more bearers in Japan than in any other country, where it is the 40th most common surname. Recorded meaning: Borrowed from Japanese 伊藤 (Itō) or Japanese 伊東 (Itō).
- JPJapan≈1 in 325(inferred from the name graph)
- USUnited States1 in 77K
- PEPeru≈1 in 15K
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)
- Sources
- 239 (measured from records)
- ≈1 in 325 (inferred from the name graph)
≈390,000 people, est.
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 Ito in JP Japan, US United States, PH Philippines 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)
Borrowed from Japanese 伊藤 (Itō) or Japanese 伊東 (Itō).
Sources 6
- Dictionary of American Family Names
- 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples)
- Digital Pāḷi Dictionary
- Wiktionary
- Dicionario Sefaradi De SobrenomesDictionary Of Sephardic Surnames Inclusive Cristaos-Novos, Conversos, Marranos, Italianos,…
Attested across 21 languages in the etymology graph.
Where in the world(measured from records)
Itô 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 | #40 | ≈390,000 est. | ≈1 in 325 | listed | Ito | 205 |
| BR Brazil | — | ≈5,800 est. | ≈1 in 37K | 650 | — | — |
| US United States | — | 4,344 | 1 in 77K | 4.4K | Ito | 239 |
| PE Peru | — | ≈2,200 est. | ≈1 in 15K | — | Ito | 13 |
| PH Philippines | — | ≈1,700 est. | ≈1 in 63K | — | Ito | 32 |
| PG Papua New Guinea | — | ≈150 est. | ≈1 in 49K | 2 | — | — |
| SG Singapore | — | ≈150 est. | ≈1 in 42K | — | Ito | 33 |
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 2000; Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA); PNG Election Results Database — candidate names (1972–2022). 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 Itô mean, and where does it come from?
- Borrowed from Japanese 伊藤 (Itō) or Japanese 伊東 (Itō). Recorded by Dictionary of American Family Names and 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples) and 4 other sources.
- In which country does Itô have the most bearers?
- Mondonomo estimates about 386 thousand people named Itô in Japan, more than in any other country we hold, where it is most often spelled ito.
- How common is the name Itô?
- In the United States, the national register counted 4,344 people named Itô in 2010, about 1 in 77 thousand residents.
- How common is Itô compared with other names?
- In Japan, Itô is the 40th most common surname of 142,159 surnames recorded there.
What do you want to know about Itô?
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/it%C3%B4The 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, “Itô” — the 40th most common surname in Japan. Data snapshot 2026-10-10.