MallowbyNames

Casmer

KAZ-mer · Of uncertain origin; possibly a variant of Casimir, meaning 'proclaimer of peace'.

Peak popularity
1911
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Casmer since 1911

Babies named Casmer per year in U.S. Social Security records. Raw births topped out in 1918, but relative to how few babies were recorded back then, Casmer's real moment was 1911.

102030192019602000Most births 1918Boys
Data table (by decade)
DecadeBoys
1910s161
1920s84
1930s10
1940s0
1950s0
1960s0
1970s0
1980s0
1990s0
2000s0
2010s0
2020s0

Meaning & origin

Casmer is a rare masculine name first recorded in the United States in 1911, the same year it reached its peak usage. Since then, it has maintained a stable but extremely low profile, with no recorded rank in recent years. The name is likely a variant of the Slavic name Casimir, which carries a hopeful meaning of 'proclaimer of peace.' In the 1910s, Casmer saw limited use, primarily among families of Polish or Slavic heritage. While no states show a significant concentration, the name reflects a tradition of honoring patron saints and royal figures from Eastern Europe. Today, with a one-in-N ratio too high to calculate, Casmer remains a distinctive choice for parents seeking a name with historical depth and rarity.

Casmer is likely a variant of Casimir, from the Polish Kazimierz, derived from Slavic elements kaziti 'to destroy' and miru 'peace', thus meaning 'destroyer of peace' but historically interpreted as 'proclaimer of peace'. The name was borne by several Polish royals and saints. Casmer appears as an anglicized spelling, recorded in the United States since the early 20th century.

Nicknames & variants

Nicknames: Cas, Cass

Variants: Casimir, Kazimir, Kazimierz, Casimer

Sibling names for Casmer

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

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

C is for Casmer, our favorite little boy.

C is for Casmer…”

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

Make Casmer's book

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Questions parents ask

What does the name Casmer mean?
Casmer is likely a variant of Casimir, which is traditionally interpreted to mean 'proclaimer of peace' from Slavic elements.
How popular is the name Casmer today?
Casmer has not ranked in the top 1000 names in the United States since at least 1911. It is a very rare name, with fewer than five newborns per year in recent decades.
Is Casmer a boy's name or a girl's name?
Casmer is almost exclusively used as a boy's name.