Mukai

surname · Latin script

Meaning: ‘the well on the other side’; mostly found in western Japan and the Ryukyu Islands

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

Mukai is a surname written in the Latin script, most frequently recorded in the United States.

Spellings & scripts(measured from records)

One other spelling is counted as the same name:

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)

‘the well on the other side’; mostly found in western Japan and the Ryukyu Islands.

Sources 1

  • Dictionary of American Family Names

Attested across 2 languages in the etymology graph.

Where in the world(measured from records)

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

Where Mukai is recorded, by country
CountryMost common spelling
US United States—1K—
BR Brazil—463—
DK Denmark—12—
PL Poland—4—
CH Switzerland—4—

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 2000; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); dane.gov.pl — PESEL living persons (surnames); 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)

Mukai is also recorded as another name, grouped separately because the records behind them do not connect to the one described above.

  • Chinese given name2 spellings in the group

    Most recorded in Taiwan, United States, China

    Also written Mu-Kai

41 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)

Mukai is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In umb, sister

    as a wordVocabulary of the Umbundu Language

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)

16001700180019002000Mukai Kyorai, b. 1651Junkichi Mukai, b. 1901Nagatoshi Mukai, b. 1910Kan Mukai, b. 1937Chiaki Mukai, b. 1952Kōsuke Mukai, b. 1977Kaori Mimura, b. 1981Osamu Mukai, b. 1982Kōji Mukai, b. 1994Shoichiro Mukai, b. 1996

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 20 sources across 12 countries.

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

What does the name Mukai mean, and where does it come from?
‘the well on the other side’; mostly found in western Japan and the Ryukyu Islands. Recorded by Dictionary of American Family Names.
In which country does Mukai have the most bearers?
Mukai is most frequently recorded in the United States.

What do you want to know about Mukai?

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/mukai

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, “Mukai”. Data snapshot 2026-10-10.

See how Mukai parses inside a full name →