Masahiro
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Masahiro is a given name written in the Latin script, with more bearers in Japan than in any other country, where it is the 36th most common given name. Recorded meaning: ‘Govern widely’.
- JPJapan≈1 in 581(inferred from the name graph)
- USUnited States1 in 517K
- EEEstonia≈1 in 88K
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)
- Sources
- 179 (measured from records)
- ≈1 in 581 (inferred from the name graph)
≈220,000 people, est.
Highest-authority source
Japan, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
‘Govern widely’.
Sources 1
- A concise dictionary of first names
Attested across 3 languages in the etymology graph.
Where in the world(measured from records)
Masahiro 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.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| JP Japan | #36 | ≈220,000 est. | ≈1 in 581 | listed | Masahiro | 162 |
| CN China | — | ≈8,600 est. | ≈1 in 161K | — | Masahiro | 13 |
| US United States | — | 644 | 1 in 517K | 643 | Masahiro | 179 |
| GB United Kingdom | — | ≈160 est. | ≈1 in 412K | listed | Masahiro | 32 |
| CA Canada | — | ≈130 est. | ≈1 in 283K | — | Masahiro | 25 |
| MY Malaysia | — | ≈120 est. | ≈1 in 280K | — | Masahiro | 17 |
| SG Singapore | — | ≈56 est. | ≈1 in 111K | — | Masahiro | 15 |
| EE Estonia | — | ≈14 est. | ≈1 in 88K | listed | — | 5 |
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; the hanks-first-names-2001 register; 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).
Notable people with this name(measured from records)
- Masahiro Makinob. 1908JPJapanese actor and director (1908-1993)
- Masahiro Shinodab. 1931JPJapanese film director and screenwriter
- Masahiro Kobayashib. 1954JPJapanese film director and screenwriter (1954-2022)
- Masahiro Takashimab. 1965JPJapanese actor
- Masahiro Motokib. 1965JPJapanese actor and singer
- Masahiro Sakuraib. 1970JPJapanese video game designer (born 1970)
- Masahiro Nakaib. 1972JPJapanese singer and actor
- Masahiro Matsuokab. 1977JPJapanese actor and musician
- Higashide Masahirob. 1988JPJapanese actor and model
- Masahiro Tanakab. 1988JPJapanese baseball pitcher
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 19 sources across 12 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 643 | #17,232 |
| US United States | SSA — National Baby Names (1880–present) | 1998 | 9 | — |
| US United States | SSA — National Baby Names (1880–present) | 1925 | 8 | — |
| US United States | SSA — National Baby Names (1880–present) | 1990 | 7 | — |
| US United States | SSA — National Baby Names (1880–present) | 2012 | 6 | — |
| US United States | SSA — National Baby Names (1880–present) | 1994 | 6 | — |
| US United States | SSA — National Baby Names (1880–present) | 1992 | 6 | — |
| US United States | SSA — National Baby Names (1880–present) | 1989 | 6 | — |
| US United States | SSA — National Baby Names (1880–present) | 2014 | 5 | — |
| US United States | SSA — National Baby Names (1880–present) | 2003 | 5 | — |
| US United States | SSA — National Baby Names (1880–present) | 1927 | 5 | — |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 1 | #17,232 |
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 Masahiro mean, and where does it come from?
- ‘Govern widely’. Recorded by A concise dictionary of first names.
- 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.
- In which country does Masahiro have the most bearers?
- Mondonomo estimates about 216 thousand people named Masahiro in Japan, more than in any other country we hold, where it is most often spelled masahiro.
- How common is the name Masahiro?
- In the United States, the national register counted 644 people named Masahiro in 2020, about 1 in 517 thousand residents.
- How common is Masahiro compared with other names?
- In Japan, Masahiro is the 36th most common given name of 366,905 given names recorded there.
What do you want to know about Masahiro?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/masahiroThe 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, “Masahiro” — the 36th most common given name in Japan. Data snapshot 2026-10-10.