Seiichi (せいいち)
Seiichi is read せいいち and has 4 beats. Our data lists 2 spellings: 勢一 and 征一. All two are masculine.
Reading
せ·い·い·ち (4 beats)
Kanji spellings
2 in our data
Gender
Masculine
Source
JMnedict, the open name dictionary
Kanji spellings of Seiichi
One sound can be written with different kanji. Each spelling below is a different name on paper.
- 勢一せいいちMasculine
Vigor + one
- 勢(せい)— vigor
- 一(いち)— one
- 征一せいいちMasculine
Campaign + one
- 征(せい)— campaign
- 一(いち)— one
The kanji in Seiichi
What each kanji means on its own, and in how many of the spellings above it appears.
- 一one2 spellings
- 勢vigor1 spelling
- 征campaign1 spelling
Seiichi with common surnames
Full names with a different spelling and surname on each card. Tap a card for the kanji breakdown.
Names that sound similar
Names that start or end with the same sounds.
Seiichi on our lists
Topic pages that include a spelling of this name.
Questions about Seiichi
Is Seiichi a boy's or a girl's name?
In our data every spelling of Seiichi is masculine.
What does Seiichi mean?
Seiichi is a sound, so the meaning comes from the kanji: 勢一 reads as "vigor + one" and 征一 reads as "campaign + one". Those come from what each kanji means by itself, and parents may have had a fuller picture in mind.
How many ways can Seiichi be written in kanji?
Our data lists 2: 勢一 and 征一. Other spellings exist, so ask how a person writes their own name before you write it for them.
How do you pronounce Seiichi?
せいいち is 4 beats: せ · い · い · ち. Give every beat the same length and keep vowels short and clear; Japanese has no stressed syllable the way English does.
Where this comes from
The spellings are from our hand-reviewed list of everyday names and from JMnedict, the open Japanese name dictionary. Meanings are built from what each kanji means on its own, so they describe the characters, not what a particular family had in mind.
How we check names · Content last reviewed: 2026-11-08.
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