Kosaku (こうさく)

Kosaku is read こうさく and has 4 beats. Our data lists 2 spellings: 興作 and 光作. All two are masculine.

Reading

こ·う·さ·く (4 beats)

Kanji spellings

2 in our data

Gender

Masculine

Source

JMnedict, the open name dictionary

Kanji spellings of Kosaku

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

  • 興作
    こうさく
    Masculine

    Prosper + make

    • 興(こう)— prosper
    • 作(さく)— make
  • 光作
    こうさく
    Masculine

    Light + make

    • 光(こう)— light
    • 作(さく)— make

The kanji in Kosaku

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

  • 作make2 spellings
  • 興prosper1 spelling
  • 光light1 spelling

Kosaku with common surnames

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

Kosaku on our lists

Topic pages that include a spelling of this name.

Unique Asian Boy NamesUncommon Japanese Names

Questions about Kosaku

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

In our data every spelling of Kosaku is masculine.

What does Kosaku mean?

Kosaku is a sound, so the meaning comes from the kanji: 興作 reads as "prosper + make" and 光作 reads as "light + make". Those come from what each kanji means by itself, and parents may have had a fuller picture in mind.

How many ways can Kosaku be written in kanji?

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

How do you pronounce Kosaku?

こうさく is 4 beats: こ · う · さ · く. 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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