Masanobu
Meaningoften just and trusting · Japanese
Masanobu is a Japanese boy name often meaning “just and trusting”. 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: Masanobu has the name Asa hiding inside it.
- Scrabble scoreIf names were allowed in Scrabble, Masanobu would score 12 points.
- GenerationMasanobu peaked in 1934, which makes it a Silent Generation name, think grandparents and great-grandparents.
- HistoryMasanobu first shows up in US birth records in 1917, the first year at least 5 babies got it. It has been in use for 108 years since.
US births per million boys, 1917–2025
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Popularity: U.S. Social Security Administration (babies with 5+ births per year).
About the name Masanobu
Masanobu is a boy name of Japanese origin meaning “often just and trusting”. 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 1930s, 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 Masanobu
What does the name Masanobu mean?
Masanobu means “often just and trusting” and comes from Japanese. Other boy names with a similar meaning include Nobuhiro (“often trusting and broad”).
What is the origin of the name Masanobu?
Masanobu is Japanese in origin. Other Japanese names to consider are Asa (“healer”), Rio (“river”), Akari (“light, brightness”) and Kenzo (“often healthy third son”).
Is Masanobu a boy or girl name?
Masanobu is a boy name.
How popular is the name Masanobu?
Masanobu is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 1934. It peaked at #3,277 in 1934, so it's a name with history that few kids share today.
What names are similar to Masanobu?
If you like Masanobu, you might also like Nobuhiro.
What should I know before naming my baby Masanobu?
Masanobu is a Japanese boy name often meaning “just and trusting”. 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.