MallowbyNames

Koichi

幸一koh-EE-chee · Koichi is a Japanese male name composed of elements meaning 'happiness,' 'light,' 'first,' or 'one,' depending on the kanji used.

Peak popularity
1921
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Koichi since 1914

Babies named Koichi per year in U.S. Social Security records.

51116192019602000Most births 1921Boys
Data table (by decade)
DecadeBoys
1910s42
1920s81
1930s6
1940s0
1950s0
1960s0
1970s0
1980s6
1990s5
2000s5
2010s0
2020s0

Meaning & origin

Koichi is a traditional Japanese masculine name that saw its peak usage in the United States in 1921, though it never ranked among the top 1000 names. The name has remained rare in U.S. records, with no recent rank data available. Its trajectory is stable, meaning it has not seen a significant resurgence or decline in recent decades. The name is composed of elements that convey positive attributes such as happiness and firstness, making it a meaningful choice for families with Japanese heritage or those who appreciate its cultural significance.

Koichi is a common Japanese masculine name formed from two kanji characters. The first kanji, 'ko' (幸), means 'happiness' or 'good fortune,' while 'ichi' (一) means 'one' or 'first.' Alternatively, 'ko' (光) meaning 'light' or 'ko' (公) meaning 'prince' or 'public' are also used. The name is typical of Japanese naming conventions that combine positive attributes with numerical or hierarchical concepts.

Nicknames & variants

Nicknames: Ko, Ichi

Variants: Kōichi, Ko-ichi

Sibling names for Koichi

Names that share Koichi's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

K is for Koichi, our favorite little boy.

K is for Koichi…”

In a Mallowby alphabet book, Koichi's letter becomes Koichi's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Koichi's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What is the meaning of the name Koichi?
Koichi is a Japanese name that typically means 'happiness' (ko) and 'first' (ichi), though it can vary based on the kanji used.
How popular is the name Koichi currently?
According to U.S. Social Security data, Koichi has not ranked in the top 1000 names in recent years. Its peak year in the U.S. was 1921.
Is Koichi a boy or girl name?
Koichi is primarily a masculine name in Japan.