Masanori
Meaningoften just principle · Japanese
Masanori is a Japanese boy name often meaning “just principle”. 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: Masanori has the name Asa hiding inside it.
- GenerationMasanori peaked in 1923, which makes it a Greatest Generation name, think great-grandparents.
- HistoryMasanori first shows up in US birth records in 1916, the first year at least 5 babies got it. It has been in use for 109 years since.
US births per million boys, 1916–2025
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Popularity: U.S. Social Security Administration (babies with 5+ births per year).
About the name Masanori
Masanori is a boy name of Japanese origin meaning “often just principle”. 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 Masanori
What does the name Masanori mean?
Masanori means “often just principle” and comes from Japanese. Other boy names with a similar meaning include Siddhant (“principle”), Akinori (“often bright principle”), Hidenori (“often excellent principle”) and Hironori (“often broad principle”).
What is the origin of the name Masanori?
Masanori is Japanese in origin. Other Japanese names to consider are Asa (“healer”), Rio (“river”), Akari (“light, brightness”) and Kenzo (“often healthy third son”).
Is Masanori a boy or girl name?
Masanori is a boy name.
How popular is the name Masanori?
Masanori is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 1930. It peaked at #3,467 in 1923, so it's a name with history that few kids share today.
What names are similar to Masanori?
If you like Masanori, you might also like Siddhant, Akinori, Hidenori and Hironori.
What should I know before naming my baby Masanori?
Masanori is a Japanese boy name often meaning “just principle”. 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.