Keizo

given name · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

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

Keizo is a given name written in the Latin script, with more bearers in Japan than in any other country.

rarermore common
  • JPJapan≈1 in 13K(inferred from the name graph)
  • EEEstonia≈1 in 352K
  • SGSingapore≈1 in 729K

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)

≈9,500 people, est.

Sources
98 (measured from records)

Highest-authority source

≈1 in 13K (inferred from the name graph)

Japan, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Attested in 1 language in the etymology graph.

Where in the world(measured from records)

Keizo 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 Keizo is recorded, by country
CountryMost common spellingSources
JP Japan≈9,500 est.≈1 in 13KlistedKeizo98
CN China≈240 est.≈1 in 5.8M—Keizo5
US United States≈150 est.≈1 in 2.2M—Keizo71
BR Brazil631 in 3.4M77——
IT Italy≈20 est.≈1 in 3.2M1—3
SG Singapore≈9 est.≈1 in 729K—Keizo6
EE Estonia≈3 est.≈1 in 352Klisted—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; IBGE — names by decade (Kaggle mirror); Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA); ISTAT — Contanomi newborn per-name series (1999–2024, JSONP backend); 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 names spelled this way(inferred from the name graph)

Keizo is also recorded as 7 other names, grouped separately because the records behind them do not connect to the one described above.

  • Portuguese given name3 spellings in the group

    Most recorded in Brazil, United States, Peru, Colombia

    Languages: Portuguese, Spanish

    Also written Keizō

  • English given name6 spellings in the group

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

    Languages: English, German, Dutch

    Also written Keizô

  • a separate name3 spellings in the group

    Also written Keizô, Keizō

  • French given name6 spellings in the group

    Most recorded in France

    Also written Kéïzo, Keïzo, Keizō, Keizô

  • Hindi given name3 spellings in the group

    Most recorded in United States

    Also written Keizô

  • Thai given name9 spellings in the group

    Most recorded in Thailand, India

    Also written Keso, เกโส๊ะ, เคโซ, Kesoh, Kešo

  • Czech given name3 spellings in the group

    Most recorded in Czechia

    Also written Keizó

27 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.

Notable people with this name(measured from records)

188019001920194019601980Keizō Shibusawa, b. 1896Keizo Miura, b. 1904Keizo Yamada, b. 1927Keizo Hino, b. 1929Keizō Obuchi, b. 1937Keizō Kanie, b. 1944Keizō Imai, b. 1950Keizo Takemi, b. 1951Keizō Hamada, b. 1952Keizō Kawakura, b. 1964

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)

Informalこんにちは、KeizoさんHi Keizo, (English)

A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.

Evidence(measured from records)

Attested in 9 sources across 4 countries.

Official registers attesting Keizo
CountryRegisterYearCountRank
BR BrazilBrasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA)—77#22,140
BR BrazilIBGE — names by decade (Kaggle mirror)202263—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—63#56,841
BR BrazilIBGE — Nomes (census name API)—26#55,495
IT ItalyISTAT — Contanomi newborn per-name series (1999–2024, JSONP backend)20221#15,419
EE EstoniaSiseministeerium — population register name list 20232023——
JP JapanJapanese Names (O'Neill, 1972)———

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

How do you pronounce Keizo?
A machine transcription gives /kizoʊ/ (IPA) for Japanese.
Is Keizo a male or female name?
Keizo 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 Keizo have the most bearers?
Mondonomo estimates about 9.5 thousand people named Keizo in Japan, more than in any other country we hold, where it is most often spelled keizo.
How common is the name Keizo?
In Brazil, the national register counted 63 people named Keizo in 2022, about 1 in 3.4 million residents.

What do you want to know about Keizo?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/keizo

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, “Keizo”. Data snapshot 2026-10-10.

See how Keizo parses inside a full name →