Koichi (こういち)

Koichi is read こういち and has 4 beats. Our data lists 2 spellings: 亨一 and 興一. All two are masculine.

Reading

こ·う·い·ち (4 beats)

Kanji spellings

2 in our data

Gender

Masculine

Source

JMnedict, the open name dictionary

Kanji spellings of Koichi

One sound can be written with different kanji. Each spelling below is a different name on paper.

  • 亨一
    こういち
    Masculine

    Smooth + one

    • 亨(こう)— smooth
    • 一(いち)— one
  • 興一
    こういち
    Masculine

    Prosper + one

    • 興(こう)— prosper
    • 一(いち)— one

The kanji in Koichi

What each kanji means on its own, and in how many of the spellings above it appears.

  • 一one2 spellings
  • 亨smooth1 spelling
  • 興prosper1 spelling

Koichi with common surnames

Full names with a different spelling and surname on each card. Tap a card for the kanji breakdown.

Questions about Koichi

Is Koichi a boy's or a girl's name?

In our data every spelling of Koichi is masculine.

What does Koichi mean?

Koichi is a sound, so the meaning comes from the kanji: 亨一 reads as "smooth + one" and 興一 reads as "prosper + one". Those come from what each kanji means by itself, and parents may have had a fuller picture in mind.

How many ways can Koichi be written in kanji?

Our data lists 2: 亨一 and 興一. Other spellings exist, so ask how a person writes their own name before you write it for them.

How do you pronounce Koichi?

こういち is 4 beats: こ · う · 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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