Kazuo
given name · Latin script
Meaning: männl. Vom. japanischer Herkunft (japan
Recorded as a male name· opposite-gender records fall within measured source noise
Kazuo is a given name written in the Latin script, with more bearers in Japan than in any other country.
- JPJapan≈1 in 1.5K(inferred from the name graph)
- USUnited States1 in 631K
- AOAngola≈1 in 28K
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)
- 3 (measured from records)
- Sources
- 157 (measured from records)
- ≈1 in 1.5K (inferred from the name graph)
≈85,000 people, est.
recorded for this name
Highest-authority source
Japan, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
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)
männl. Vom. japanischer Herkunft (japan. kazu »Frieden« + japan. 0 »Mann«).
Sources 1
- DUDEN Lexikon der Vornamen
Attested across 2 languages in the etymology graph.
Where in the world(measured from records)
Kazuo 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 | #210 | ≈85,000 est. | ≈1 in 1.5K | listed | Kazuo | 137 |
| AO Angola | — | ≈1,200 est. | ≈1 in 28K | — | Kazuo | 1 |
| BR Brazil | — | 580 | 1 in 365K | 763 | — | 1 |
| US United States | — | 527 | 1 in 631K | 522 | Kazuo | 157 |
| CA Canada | — | ≈170 est. | ≈1 in 223K | — | Kazuo | 22 |
| BO Bolivia | — | ≈34 est. | ≈1 in 341K | — | Kazuo | 3 |
| EE Estonia | — | ≈16 est. | ≈1 in 78K | listed | — | 2 |
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: the japanese-names-oneill-1972 register; Census Bureau — First Name Frequency 2020 by sex; IBGE — names by decade (Kaggle mirror); Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA); the ee-siseministeerium-registry register. 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 recorded senses(measured from records)
Kazuo is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
‘Harmonious man’.
as a nameA concise dictionary of first names
l<ELEMAN
as a name25,000 nombres de bebé. La mejor guía para escoger el nombre adecuado
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)
- Kazuo Hatoyamab. 1856JPJapanese politician
- Kazuo Miyagawab. 1908JPJapanese cinematographer (1908–1999)
- Kazuo Kumakurab. 1927JPJapanese voice actor
- Kazuo Inamorib. 1932JPJapanese businessman (1932-2022)
- Kazuo Imanishib. 1941JPJapanese association football player and manger (1941-2026)
- Kazuo Sugenob. 1943JPJapanese legal scholar
- Kazuo Uedab. 1951JPJapanese economist (1951-)
- Kazuo Ishigurob. 1954JPBritish novelist (born 1954)
- Kazuo Shiib. 1954JPJapanese politician (1954-)
- Kazuki Takahashib. 1961JPnot in their usual nameJapanese manga artist (1961-2022)
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)
Attested in 26 sources across 17 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA) | — | 763 | #4,580 |
| BR Brazil | IBGE — Nomes (census name API) | — | 737 | #11,193 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 580 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 568 | #12,091 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2010 | 557 | — |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 522 | #19,856 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 1960 | 504 | — |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 1950 | 348 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1940 | 194 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1950 | 156 | — |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 1940 | 154 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1930 | 81 | — |
Reference works 2
- Dictionary of American Family Names
- Wikipedia given-name 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
- Where does the name Kazuo come from?
- männl. Vom. japanischer Herkunft (japan. kazu »Frieden« + japan. 0 »Mann«). Recorded by DUDEN Lexikon der Vornamen.
- Is Kazuo a male or female name?
- Kazuo 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 Kazuo have the most bearers?
- Mondonomo estimates about 85 thousand people named Kazuo in Japan, more than in any other country we hold, where it is most often spelled kazuo.
- What does the name Kazuo mean?
- Recorded meaning: männl. Vom. japanischer Herkunft (japan.
- How common is the name Kazuo?
- In Brazil, the national register counted 580 people named Kazuo in 2022, about 1 in 365 thousand residents.
- How common is Kazuo compared with other names?
- In Japan, Kazuo is the 210th most common given name of 366,905 given names recorded there.
What do you want to know about Kazuo?
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/kazuoThe 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, “Kazuo” — the 210th most common given name in Japan. Data snapshot 2026-10-10.