Kosaku

given name · Latin script

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

Kosaku is a given name written in the Latin script, most frequently recorded in the United States.

rarermore common
  • AUAustralia
  • DEGermany
  • USUnited States

Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.

United States (inferred from the name graph)

no count published

Sources
13 (measured from records)

Highest-authority source

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 across 2 languages in the etymology graph.

Where in the world(measured from records)

Kosaku counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Where Kosaku is recorded, by country
CountryMost common spellingSources
US United States——Kosaku13
AU Australia——Kosaku7
DE Germany——Kosaku5
EE Estonia—listed——

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.

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)

Kosaku is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate name2 spellings in the group

    Also written Kōsaku

  • Hindi name3 spellings in the group

    Also written Kōsaku

25 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)

18001850190019502000Kosaku Matsumora, b. 1829Hamada Kōsaku, b. 1881Kosaku Yamada, b. 1886Kōsaku Aruga, b. 1897Kōsaku Yosida, b. 1909Kōsaku Sugiura, b. 1926Kōsaku Yamashita, b. 1930Kōsaku Maeda, b. 1933Kōsaku Anakubo, b. 1957Kosaku Masuda, b. 1976

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 3 sources across 1 country.

Reference works 2

  • Dictionary of American Family Names
  • 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

Is Kosaku a male or female name?
Kosaku 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 Kosaku have the most bearers?
Kosaku is most frequently recorded in the United States, where it is most often spelled kosaku.

What do you want to know about Kosaku?

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

The same 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), and bulk access is licensed separately.

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, “Kosaku”. Data snapshot 2026-10-10.

See how Kosaku parses inside a full name →