Oki

surname · Latin script

Meaning, in Japanese: Rōmaji transcription of おき

Recorded for both men and women· direction only, no split published

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

Oki is a surname written in the Latin script, with more bearers in the United States than in any other country.

rarermore common
  • USUnited States1 in 551K(measured from records)
  • JPJapan≈1 in 1.3M
  • BRBrazil1 in 373K

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)

604 people, 2010

Sources
111 (measured from records)

Highest-authority source

1 in 373K (inferred from the name graph)

Brazil

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

initialism of Organisasi Kerja Sama Islam (“Organization for Islamic Cooperation”): OIC

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested in 1 language in the etymology graph.

How Oki is read(measured from records)

Oki is one spelling over 5 language communities, and the dictionaries record it differently in 3 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.

  • English35%

    Japanese electronics co.

    as a namePronouncing Dictionary of Proper Names

  • Japanese32%

    Rōmaji transcription of おき

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

  • Swahili8.1%

    No dictionary in our sources glosses Oki in Swahili.

  • Indonesian7.5%

    initialism of Organisasi Kerja Sama Islam (“Organization for Islamic Cooperation”): OIC

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

  • Portuguese6.2%

    No dictionary in our sources glosses Oki in Portuguese.

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 We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.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)

Oki 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 Oki is recorded, by country
CountryMost common spellingSources
US United States6041 in 551K624Oki104
BR Brazil5671 in 373K567——
JP Japan≈97 est.≈1 in 1.3M—Oki111
BE Belgium191 in 617K19—6
ES Spain181 in 2.8M18—9
CH Switzerland71 in 1.2M7—3

604 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 2000; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); Familienaam.be — Belgian family-name frequency (population register); INE — Padrón per-token widgets (current living counts, given + apellidos); BFS — Familiennamen der Wohnbevölkerung (surnames). 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)

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

  • English surname5 spellings in the group

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

    Languages: English, Dutch

    Also written Õkï, Ôkî

  • German surname6 spellings in the group

    Most recorded in Germany, Austria, United States, Switzerland

    Languages: German, English

    Also written Oeki, Öki

  • a separate name3 spellings in the group

    Also written Ōki, Ôki

51 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)

Oki 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 tut-pro, to sing, recite

    as a wordStarLing Tower of Babel etymological databases (Starostin et al.)

  • In xgn-pro, top, tip, edge

    as a wordStarLing Tower of Babel etymological databases (Starostin et al.)

  • In Albanian, initialism of Organizata e Bashkëpunimit Islam (“Organisation of Islamic Cooperation”)

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

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)

18001850190019502000Ōki Takatō, b. 1832Enkichi Ōki, b. 1871Minoru Ōki, b. 1923Hiroshi Ōki, b. 1927Tamio Ōki, b. 1928Kintaro Ohki, b. 1929Shōji Ōki, b. 1936Wakako Oki, b. 1952Bibiru Ōki, b. 1974Kanae Oki, b. 1986

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 Mr Oki,
InformalHi Oki,

Evidence(measured from records)

Attested in 28 sources across 17 countries.

Official registers attesting Oki
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 20002000624#34,342
US United StatesCensus Bureau — Surname Frequency 20202020608#39,103
US United StatesCensus Bureau — Surname Frequency 20102010604#36,970
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—567#15,198
BE BelgiumFamilienaam.be — Belgian family-name frequency (population register)200819#48,877
ES SpainINE — Padrón per-token widgets (current living counts, given + apellidos)—18#88,854
CH SwitzerlandBFS — Familiennamen der Wohnbevölkerung (surnames)20247#79,838
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 3

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

Where does the name Oki come from?
initialism of Organisasi Kerja Sama Islam (“Organization for Islamic Cooperation”): OIC Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Oki?
A machine transcription gives /ˈoʊki/ (IPA) for English.
What does the name Oki mean?
In Japanese, Rōmaji transcription of おき
In which country does Oki have the most bearers?
In the United States, the national register counted about 604 people named Oki, more than in any other country we hold, where it is most often spelled oki.
Where is Oki most common?
Measured as a share of residents rather than as a count, Oki is densest in Brazil — about 1 in 373 thousand people — even though United States holds more of our records for it.
How common is the name Oki?
In the United States, the national register counted 604 people named Oki in 2010, about 1 in 551 thousand residents.

What do you want to know about Oki?

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/oki

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, “Oki”. Data snapshot 2026-10-10.

See how Oki parses inside a full name →