Eiichi
Meaningoften prosperous first son · Japanese
Eiichi is a Japanese boy name often meaning “prosperous first son”. 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?
- GenerationEiichi peaked in 1918, which makes it a Greatest Generation name, think great-grandparents.
- HistoryEiichi first shows up in US birth records in 1918, the first year at least 5 babies got it. It has been in use for 107 years since.
US births per million boys, 1918–2025
Similar names
Save adds it to your list. Vote moves it up the top voted names.
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
About the name Eiichi
Eiichi is a boy name of Japanese origin meaning “often prosperous first son”. 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 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 Eiichi
What does the name Eiichi mean?
Eiichi means “often prosperous first son” and comes from Japanese. Other boy names with a similar meaning include Aamir (“prosperous, long-lived”), Amer (“prosperous, thriving”), Yaser (“prosperous”) and Eiji (“often prosperous second son”).
What is the origin of the name Eiichi?
Eiichi is Japanese in origin. Other Japanese names to consider are Asa (“healer”), Rio (“river”), Akari (“light, brightness”) and Kenzo (“often healthy third son”).
Is Eiichi a boy or girl name?
Eiichi is a boy name.
How popular is the name Eiichi?
Eiichi is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 1925. It peaked at #3,728 in 1918, so it's a name with history that few kids share today.
What names are similar to Eiichi?
If you like Eiichi, you might also like Aamir, Amer, Yaser and Eiji.
What should I know before naming my baby Eiichi?
Eiichi is a Japanese boy name often meaning “prosperous first son”. 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.