Masahiro

given name · Japanese · Latin script

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

Masahiro is a given name, most frequently recorded in Japan, where it is the 36th most common given name. It appears chiefly in Japanese and English, written in the Latin script. Recorded meaning: ‘Govern widely’.

rarermore common
  • JPJapan1 in 889◐
  • USUnited States1 in 517K
  • SGSingapore1 in 152K

carrying the name, one hue, darker where it is more common. Hover a country for its figure.

≈786 ●

across 6 countries

Sources
160 ●

74K records

Official registry-verified

1 in 517K ◐

United States

Meaning & origin●

‘Govern widely’.

Sources 1

  • A concise dictionary of first names

Attested across 3 languages in the etymology graph.

Where in the world●

Sorted by bearers counted by national registers, records where none counts.

Where Masahiro is recorded, by country
CountryMost common spellingSources
JP Japan#3681,24768K rec.—listedMasahiro154
US United States—6434.8K rec.1 in 517K643Masahiro160
GB United Kingdom—219194 rec.—listedMasahiro30
CA Canada—215199 rec.——Masahiro22
BR Brazil—99—1 in 2.1M109——
SG Singapore—7167 rec.——Masahiro13
RU Russia—6157 rec.——Masahiro6
IN India—5635 rec.——Masahiro10
PH Philippines—5641 rec.——Masahiro18
CN China—4222 rec.——Masahiro13
MY Malaysia—3328 rec.——Masahiro15
PL Poland—29—1 in 1.3M29——

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table. How that works.

Languages●

  • Japanese87K90%
  • English4.7K5%
  • Portuguese1.8K2%
  • Spanish6481%
  • German5791%
Show as table
Languages in which the name is recorded
NameRecordsNote
Japanese87,10290%
English4,6975%
Portuguese1,8382%
Spanish6481%
German5791%

Language is read off each record's context, not declared by the bearer; a share is of all records for this spelling.

Other names spelled this way◐

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

  • English given name6.3K records spelled Masahiro4 spellings in the group

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

    Languages: English, German

    Also written Maşahiro

  • a separate given name1.8K records spelled Masahiro2 spellings in the group

    Most recorded in United States, India, United Kingdom, China

    Also written Masahíro

  • Japanese given name598 records spelled Masahiro5 spellings in the group

    Most recorded in Japan, United States, China, Canada

    Languages: Japanese, Chinese, Swahili

    Also written Masahiko

  • Thai given name261 records spelled Masahiro9 spellings in the group

    Most recorded in Thailand, United States

    Languages: Thai, Lao

    Also written มาซาฮิโร, มาซาฮิโร่, มาซาฮิโระ, มาซาฮีโร่, มาซาฮีโร

45 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.

Over time●

02.557.51019401960198020009 · 1998

Show as table
Masahiro in SSA — National Baby Names (1880–present), United States, 1925–2014
Yearrecords
19258
19275
19896
19907
19926
19946
19989
20035
20126
20145

US SSA — National Baby Names (1880–present) — 10 years between 1925–2014. One register's own figures, never a sum across registers: two registers counting the same people would double them.

Notable people with this name●

190019201940196019802000Masahiro Makino, b. 1908Masahiro Shinoda, b. 1931Masahiro Kobayashi, b. 1954Masahiro Takashima, b. 1965Masahiro Motoki, b. 1965Masahiro Sakurai, b. 1970Masahiro Nakai, b. 1972Masahiro Matsuoka, b. 1977Higashide Masahiro, b. 1988Masahiro Tanaka, b. 1988

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●

Attested in 19 sources across 12 countries.

Official registers attesting Masahiro
CountryRegisterYearCountRank
US United StatesCensus Bureau — First Name Frequency 2020 by sex2020643#17,232
BR BrazilBrasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA)—109#17,591
BR BrazilIBGE — names by decade (Kaggle mirror)202299—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—99#41,610
BR BrazilIBGE — Nomes (census name API)—84#39,311
BR BrazilIBGE — names by decade (Kaggle mirror)195075—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—65#86,981
FI FinlandDVV — Nimipalvelu (Finnish name service, per-name lookup)—44#9,389
BR BrazilIBGE — names by decade (Kaggle mirror)194041—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)194034—
FI FinlandDVV — Nimipalvelu (Finnish name service, per-name lookup)—30#17,028
PL Polanddane.gov.pl — PESEL given names (first + second name position, 2026-01-20)202629#4,950

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 2026-09-12 data build · 35 rows in the corpus for this spelling.

Frequently asked questions

How common is the name Masahiro?
We estimate roughly 786 people bear Masahiro (counting its spellings and scripts) across 6 countries in our records.
In which country does Masahiro have the most bearers?
Masahiro is most frequently recorded in Japan, where it is most often spelled masahiro.
How common is Masahiro compared with other names?
In Japan, Masahiro is the 36th most common given name of 355,102 given names recorded there.
Is Masahiro a male or female name?
Masahiro 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.
What does the name Masahiro mean?
Recorded meaning: ‘Govern widely’.
Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/masahiro

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use. Bulk access and licensing.

About this data

● measured from records◐ inferred from the name graph○ machine-generated

Data snapshot . Figures are rebuilt periodically and will change.

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, “Masahiro” — the 36th most common given name in Japan. Data snapshot 2026-09-12.

See how Masahiro parses inside a full name →