Masahiro
Meaningoften just and broad · Japanese
Masahiro is a Japanese boy name often meaning “just and broad”. In Japan, parents often choose a name as much for the kanji characters behind it as for its sound, so the same name can carry several shades of meaning. A meaning like this gives a child something to grow into, and a good story to tell when someone asks about their name. It sounds flowing and melodic, it's a longer name that leaves plenty of room for nicknames, and it pairs well with a short middle name.
Did you know?
- Hidden namesLook closely: Masahiro has the name Asa hiding inside it.
- Scrabble scoreIf names were allowed in Scrabble, Masahiro would score 13 points, thanks largely to the H (worth 4).
- GenerationMasahiro peaked in 1925, which makes it a Greatest Generation name, think great-grandparents.
- HistoryMasahiro first shows up in US birth records in 1925, the first year at least 5 babies got it. It has been in use for 100 years since.
US births per million boys, 1925–2025
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Popularity: U.S. Social Security Administration (babies with 5+ births per year).
About the name Masahiro
Masahiro is a boy name of Japanese origin meaning “often just and broad”. With 4 syllables it has a flowing, lyrical sound, and plenty of room for a nickname, so a short middle name balances it nicely. It was most fashionable in the 1920s, which gives it a vintage, grandparent-chic charm. It's rarely heard today, so it stands out while still being a real, established name.
Origin:Japanese names
More Japanese boy names
- Unisex name: Asa · healer
- Unisex name: Rio · river
- Unisex name: Akari · light, brightness
- Boy name: Kenzo · often healthy third son
- Boy name: Kenji · often strong second son
- Unisex name: Ren · often lotus
- Unisex name: Zen · meditation
- Unisex name: Mars · god of war
Questions about the name Masahiro
What does the name Masahiro mean?
Masahiro means “often just and broad” and comes from Japanese. Other boy names with a similar meaning include Bradley (“broad clearing”), Braeden (“broad valley”), Bradford (“from the broad ford”) and Brad (“broad meadow”).
What is the origin of the name Masahiro?
Masahiro is Japanese in origin. Other Japanese names to consider are Asa (“healer”), Rio (“river”), Akari (“light, brightness”) and Kenzo (“often healthy third son”).
Is Masahiro a boy or girl name?
Masahiro is a boy name.
How popular is the name Masahiro?
Masahiro is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 2014. It peaked at #3,155 in 1925, so it's a name with history that few kids share today.
What names are similar to Masahiro?
If you like Masahiro, you might also like Bradley, Braeden, Bradford and Brad.
What should I know before naming my baby Masahiro?
Masahiro is a Japanese boy name often meaning “just and broad”. In Japan, parents often choose a name as much for the kanji characters behind it as for its sound, so the same name can carry several shades of meaning. A meaning like this gives a child something to grow into, and a good story to tell when someone asks about their name. It sounds flowing and melodic, it's a longer name that leaves plenty of room for nicknames, and it pairs well with a short middle name. Say it out loud with your last name and any middle names you're considering, and check the initials it makes.