Masaaki

given name · Latin script

Meaning: ‘Correct brightness’

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

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

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

rarermore common
  • JPJapan≈1 in 1.6K(inferred from the name graph)
  • USUnited States1 in 1.3M
  • EEEstonia≈1 in 235K

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)

≈80,000 people, est.

Sources
137 (measured from records)

Highest-authority source

≈1 in 1.6K (inferred from the name graph)

Japan, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

‘Correct brightness’.

Sources 1

  • A concise dictionary of first names

Attested in 1 language in the etymology graph.

Where in the world(measured from records)

Masaaki 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 Masaaki is recorded, by country
CountryMost common spellingSources
JP Japan#237≈80,000 est.≈1 in 1.6KlistedMasaaki137
CN China—≈2,200 est.≈1 in 646K—Masaaki8
US United States—2621 in 1.3M261Masaaki136
BR Brazil—631 in 3.4M65——
IT Italy—≈53 est.≈1 in 1.2M—Masaaki4
CA Canada—≈49 est.≈1 in 772K1Masaaki15
SG Singapore—≈11 est.≈1 in 583K—Masaaki8
EE Estonia—≈5 est.≈1 in 235Klisted—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; Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; 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 names spelled this way(inferred from the name graph)

Masaaki is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • English given name7 spellings in the group

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

    Languages: English, German, Dutch

    Also written Masa-Aki

  • Portuguese given name5 spellings in the group

    Most recorded in Brazil, United States, Argentina, Peru

    Languages: Portuguese, Spanish

    Also written Masa-Aki

  • a separate name2 spellings in the group

    Also written Masa-Aki

  • Thai given name28 spellings in the group

    Most recorded in Thailand, Laos

    Languages: Thai, Lao

    Also written มะซากี, Masaki, มะสากี, Masakee, มาซากิ

35 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)

19201940196019802000Masaaki Hatsumi, b. 1931Masaaki Ōsawa, b. 1946Masaaki Shirakawa, b. 1949Masaaki Suzuki, b. 1954Masaaki Yuasa, b. 1965Masaaki Satake, b. 1965Masaaki Endoh, b. 1967Tarusuke Shingaki, b. 1976Hiroshi Miyama, b. 1980Masaaki Higashiguchi, b. 1986

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、MasaakiさんHi Masaaki, (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 21 sources across 13 countries.

Official registers attesting Masaaki
CountryRegisterYearCountRank
US United StatesCensus Bureau — First Name Frequency 2020 by sex2020261#32,261
BR BrazilBrasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA)—65#24,707
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 — names by decade (Kaggle mirror)194037—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)194026—
BR BrazilIBGE — Nomes (census name API)—23#58,667
US United StatesSSA — National Baby Names (1880–present)19347—
US United StatesSSA — National Baby Names (1880–present)19296—
US United StatesSSA — National Baby Names (1880–present)19266—
US United StatesSSA — National Baby Names (1880–present)19226—
US United StatesSSA — National Baby Names (1880–present)19235—

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

What does the name Masaaki mean, and where does it come from?
‘Correct brightness’. Recorded by A concise dictionary of first names.
How do you pronounce Masaaki?
A machine transcription gives /ˌmɑsɑˈɑˌki/ (IPA) for Japanese.
Is Masaaki a male or female name?
Masaaki 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 Masaaki have the most bearers?
Mondonomo estimates about 80 thousand people named Masaaki in Japan, more than in any other country we hold, where it is most often spelled masaaki.
How common is the name Masaaki?
In the United States, the national register counted 262 people named Masaaki in 2020, about 1 in 1.3 million residents.
How common is Masaaki compared with other names?
In Japan, Masaaki is the 237th most common given name of 366,905 given names recorded there.

What do you want to know about Masaaki?

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

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, “Masaaki” — the 237th most common given name in Japan. Data snapshot 2026-10-10.

See how Masaaki parses inside a full name →