MallowbyNames

Isamu

ee-SAH-moo · It means 'courage' or 'bravery' in Japanese.

Peak popularity
1922
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Isamu since 1912

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

132740192019602000Most births 1922Boys
Data table (by decade)
DecadeBoys
1910s147
1920s295
1930s73
1940s0
1950s0
1960s0
1970s0
1980s5
1990s0
2000s36
2010s0
2020s6

Meaning & origin

Isamu is a Japanese name meaning 'courage' that primarily saw use in the United States among Japanese American families in the early 20th century. The name first appeared in U.S. records in 1912 and reached its highest recorded usage in 1922, reflecting a generation of children born to immigrants from Japan. Its trajectory has been stable, and while it has never ranked in the national top 1000, it holds cultural significance. The name has not been recorded in recent decades, suggesting it remains a rare but meaningful choice for those seeking a name with a strong, straightforward meaning.

Isamu is a Japanese name derived from the verb 'isamu' (勇む), meaning 'to be courageous' or 'to be spirited.' It has been used in Japan for centuries, often chosen for boys to inspire bravery. The name saw a peak in popularity in the United States in 1922, reflecting early Japanese American communities.

Nicknames & variants

Nicknames: Isa, Samu

Sibling names for Isamu

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

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

I is for Isamu, our favorite little boy.

I is for Isamu…”

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

Make Isamu's book

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

Questions parents ask

What does the name Isamu mean?
Isamu means 'courage' or 'bravery' in Japanese.
How popular is the name Isamu currently?
Isamu is not currently ranked in the top 1000 names in the U.S. based on the latest data from 2025.
Is Isamu a boy's name or a girl's name?
Isamu is predominantly a boy's name in Japan and the United States.