Okubo
surname · Latin script
Recorded for both men and women· direction only, no split published
/oʊˈkuboʊ/(machine-generated) pronunciation, model-generated
Okubo is a surname written in the Latin script, with more bearers in Japan than in any other country.
- JPJapan≈1 in 3.2K(inferred from the name graph)
- USUnited States1 in 454K
- BRBrazil1 in 245K
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
- 122 (measured from records)
- ≈1 in 3.2K (inferred from the name graph)
≈39,000 people, est.
Highest-authority source
Japan, est.
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Attested across 2 languages in the etymology graph.
Where in the world(measured from records)
Okubo 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 | #662 | ≈39,000 est. | ≈1 in 3.2K | — | Okubo | 122 |
| CN China | — | ≈3,800 est. | ≈1 in 363K | — | Okubo | 13 |
| BR Brazil | — | 863 | 1 in 245K | 863 | — | — |
| US United States | — | 733 | 1 in 454K | 733 | Okubo | 105 |
| NG Nigeria | — | ≈690 est. | ≈1 in 312K | — | Okubo | 9 |
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; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname). 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).
Notable people with this name(measured from records)
- Ōkubo Nagayasub. 1545JPJapanese samurai
- Toshimichi Ōkubob. 1830JPone of the three great nobles who led the Meiji Restoration, regarded as one of the main founders of modern Japan (1830-1878)
- Masanobu Ōkubob. 1922JPJapanese actor and voice actor
- Susumu Okubob. 1930JPJapanese physicist (1930–2015)
- Hiromoto Okubob. 1967JPJapanese baseball player (1967-)
- Kayoko Ōkubob. 1971JPJapanese comedian
- Ai Iijimab. 1972JPnot in their usual nameJapanese television personality (1972–2008)
- Atsushi Ōkubob. 1979JPJapanese manga artist
- Chika Ōkubob. 1980JPJapanese actor and seiyū
- Yoshito Okubob. 1982JPJapanese association football player
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)
Evidence(measured from records)
Attested in 16 sources across 11 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 863 | #10,568 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 733 | #31,554 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 704 | #31,167 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 692 | #35,096 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 1
- Wikipedia surname tokens
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
- How do you pronounce Okubo?
- A machine transcription gives /oʊˈkuboʊ/ (IPA) for Japanese.
- In which country does Okubo have the most bearers?
- Mondonomo estimates about 39 thousand people named Okubo in Japan, more than in any other country we hold, where it is most often spelled okubo.
- How common is the name Okubo?
- In Brazil, the national register counted 863 people named Okubo, about 1 in 245 thousand residents.
- How common is Okubo compared with other names?
- In Japan, Okubo is the 662nd most common surname of 142,159 surnames recorded there.
What do you want to know about Okubo?
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/okuboThe 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, “Okubo” — the 662nd most common surname in Japan. Data snapshot 2026-10-10.