Itó

surname · Latin script

Itó is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Borrowed from Japanese 伊藤 (Itō) or Japanese 伊東 (Itō).

  • FIFinland1 in 65K(measured from records)
  • USUnited States1 in 77K
  • CHSwitzerland1 in 117K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

4,344 people, 2010

Record sources
165 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 65K (inferred from the name graph)

Finland

measured from records inferred from the name graph

Name dossier (print, CSV)Make your nomograph ✦

Spellings & scripts

(measured from records)

One other spelling is counted as the same name:

Locally spelled Ito in BR Brazil, US United States, AR Argentina and 1 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).

Cited for this meaning 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 20 languages in the etymology graph.

Where the surname Itó is found

(measured from records)

Itó 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.

Where Itó is recorded, by country
CountryMost common spellingSources
US United States—4,3441 in 77K4.4KIto165
ES Spain—1141 in 439K114Ito29
FI Finland—861 in 65K86—1
PL Poland—771 in 497K44——
AR Argentina—761 in 598K76Ito35
CH Switzerland—721 in 117K72—4
BE Belgium—571 in 206K57—5
UY Uruguay—161 in 212K16—7
BR Brazil#838≈4 est.≈1 in 55M650Ito133

4,344 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: Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2000; RENAPER — Apellidos (person counts, national); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); DVV — Nimipalvelu (Finnish name service, per-name lookup); BFS — Familiennamen der Wohnbevölkerung (surnames); Familienaam.be — Belgian family-name frequency (population register); dane.gov.pl — PESEL living persons (surnames); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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)

Itó is also recorded as 3 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate name5 spellings in the group

    Also written Itô, Ito, Itō, Iţo

  • Thai surname100 spellings in the group

    Most recorded in Thailand, United States, Indonesia, Laos

    Languages: Thai, Lao

    Also written อยุธยา, Ayudhya, Ayudhaya, Ayuthaya, ยุทธยา

  • English surname22 spellings in the group

    Most recorded in United States, Philippines, Australia, United Kingdom

    Languages: English, German, Dutch

    Also written Ito, Itoe, Itō, Itò, Ìtõ

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.

Notable people with this name

(measured from records)
1800185019001950Itō Hirobumi, b. 1841Kiyoshi Ito, b. 1915Robert Ito, b. 1931
  • Itō Hirobumib. 1841JP1st, 5th, 7th and 10th Prime Minister of Japan (1841–1909)
  • Kiyoshi Itob. 1915JPJapanese mathematician who pioneered stochastic calculus (1915–2008)
  • Robert Itob. 1931CACanadian actor

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).

Evidence

(measured from records)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Itó under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Itó 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.
Which countries have the most people with the surname Itó?
In the United States, the national register counted about 4.3 thousand people named Itó, more than in any other country we hold, where it is most often spelled ito. After it come Spain, Finland, Poland and Argentina; the country table on this page ranks them.
Where is Itó most common?
Measured as a share of residents rather than as a count, Itó is densest in Finland — about 1 in 65 thousand people — even though United States holds more of our records for it.
How common is the name Itó?
In the United States, the national register counted 4,344 people named Itó in 2010, about 1 in 77 thousand residents.
How common is Itó compared with other names?
In Brazil, Itó is the 838th most common surname of 424,864 surnames recorded there.

What do you want to know about Itó?

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/it%C3%B3

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, “Itó” — the 838th most common surname in Brazil. Data snapshot 2026-10-13.

See how Itó parses inside a full name →