Masashi

given name · Latin script

Meaning: $ ‘Correct’; ‘splendid official’

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

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

Masashi is a given name written in the Latin script, with more bearers in the United States than in any other country.

rarermore common
  • USUnited States1 in 911K(measured from records)
  • SESweden1 in 2M
  • PLPoland1 in 3.5M

carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

365 people, 2020

Sources
70 (measured from records)

Highest-authority source

1 in 911K (inferred from the name graph)

United States

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

$ ‘Correct’; ‘splendid official’.

Sources 1

  • A concise dictionary of first names

Attested in 1 language in the etymology graph.

Where in the world(measured from records)

Masashi 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 Masashi is recorded, by country
CountryMost common spellingSources
US United States3651 in 911K365Masashi70
BR Brazil501 in 4.2M50—1
PL Poland111 in 3.5M11—1
SE Sweden51 in 2M5—2
AU Australia———Masashi21
IE Ireland———Masashi1

365 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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 — First Name Frequency 2020 by sex; IBGE — names by decade (Kaggle mirror); dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (names); Skatteverket — Sök hur många som har ett visst namn (living population). 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)

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

  • Thai given name3 spellings in the group

    Most recorded in Thailand, United States

    Also written มาซาชิ

  • Russian given name10 spellings in the group

    Most recorded in Russia, United States, Ukraine

    Languages: Russian, Ukrainian

    Also written Масаси, Масаши, Масаші, Masaşi, Masasi

38 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)

190019502000Seishi Yokomizo, b. 1902Masashi Ueda, b. 1947Masashi Sakayori, b. 1949Masashi Sada, b. 1952Masashi Ebara, b. 1953Masashi Tashiro, b. 1956Masashi Nakayama, b. 1967Masashi Kishimoto, b. 1974Masashi Nishiyama, b. 1985Masashi Ebinuma, b. 1990

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、MasashiさんHi Masashi, (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 18 sources across 12 countries.

Official registers attesting Masashi
CountryRegisterYearCountRank
US United StatesCensus Bureau — First Name Frequency 2020 by sex2020365#25,807
BR BrazilIBGE — names by decade (Kaggle mirror)202250—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—50#66,656
BR BrazilIBGE — Nomes (census name API)—20#62,740
US United StatesSSA — National Baby Names (1880–present)192413—
US United StatesSSA — National Baby Names (1880–present)192113—
PL Polanddane.gov.pl — PESEL living persons (names)—11#9,292
PL Polanddane.gov.pl — PESEL given names (first + second name position, 2026-01-20)202611#9,973
US United StatesSSA — National Baby Names (1880–present)191810—
US United StatesSSA — National Baby Names (1880–present)19299—
US United StatesSSA — National Baby Names (1880–present)19209—
US United StatesSSA — National Baby Names (1880–present)19898—

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 Masashi mean, and where does it come from?
$ ‘Correct’; ‘splendid official’. Recorded by A concise dictionary of first names.
How do you pronounce Masashi?
A machine transcription gives /məzɑʃi/ (IPA) for Japanese.
Is Masashi a male or female name?
Masashi 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 Masashi have the most bearers?
In the United States, the national register counted about 365 people named Masashi, more than in any other country we hold, where it is most often spelled masashi.
Where is Masashi most common?
Masashi is densest in the United States, where the national register counts about 1 in 911 thousand people carrying it.
How common is the name Masashi?
In the United States, the national register counted 365 people named Masashi in 2020, about 1 in 911 thousand residents.

What do you want to know about Masashi?

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/masashi

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, “Masashi”. Data snapshot 2026-10-10.

See how Masashi parses inside a full name →