Masayo
Meaningoften just era · Japanese
Masayo is a Japanese girl name often meaning “just era”. 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 simple to spell and say, and it pairs well with a short middle name.
Did you know?
- Hidden namesLook closely: Masayo has the name Asa hiding inside it.
- GenerationMasayo peaked in 1915, which makes it a Greatest Generation name, think great-grandparents.
- HistoryMasayo first shows up in US birth records in 1914, the first year at least 5 babies got it. It has been in use for 111 years since.
US births per million girls, 1914–2025
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Popularity: U.S. Social Security Administration (babies with 5+ births per year).
About the name Masayo
Masayo is a girl name of Japanese origin meaning “often just era”. With 3 syllables it has a flowing, lyrical sound, so a short middle name balances it nicely. It was most fashionable in the 1910s, 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 girl names
- Girl name: Naomi · pleasantness
- Girl name: Noa · movement
- Girl name: Reina · queen
- Girl name: Aya · sign, verse
- Girl name: Hana · one; flower in Japanese
- Girl name: Kiyomi · often pure beauty
- Girl name: Yuna · often gentle
- Unisex name: Akira · bright, clear
Questions about the name Masayo
What does the name Masayo mean?
Masayo means “often just era” and comes from Japanese. Other girl names with a similar meaning include Justine (“just, fair”), Justina (“just, fair”), Justus (“just, fair”) and Adila (“fair, just”).
What is the origin of the name Masayo?
Masayo is Japanese in origin. Other Japanese names to consider are Naomi (“pleasantness”), Noa (“movement”), Reina (“queen”) and Aya (“sign, verse”).
Is Masayo a boy or girl name?
Masayo is a girl name.
How popular is the name Masayo?
Masayo is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 1928. It peaked at #2,688 in 1915, so it's a name with history that few kids share today.
What names are similar to Masayo?
If you like Masayo, you might also like Justine, Justina, Justus and Adila.
What should I know before naming my baby Masayo?
Masayo is a Japanese girl name often meaning “just era”. 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 simple to spell and say, 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.