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Home › Baby Names Directory › Casmir

Casmir

♂ Boy

Pronounced KAZ-meer /ˈkæz.mir/Medium

Meaning: A spelling of Casimir — from the Slavic Kazimierz, variously 'one who proclaims/establishes peace' and 'destroyer of peace' (kaziti + mir); routes layeredLow

In 30 seconds: One who proclaims peace; destroyer of peace: Casmir spells Casimir. Crisp, classic, and warm (said 'KAZ-meer').
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Origin LowSlavic, Polish
MeaningA spelling of Casimir — from the Slavic Kazimierz, variously 'one who proclaims/establishes peace' and 'destroyer of peace' (kaziti + mir); routes layered
U.S. rank (2025)#10909 ↘ Falling
2025 U.S. births6 boys (0.00% of U.S. boys)
Peak year1918
Total births (all-time)≈ 342

Popularity in the U.S. · SSA data

peak 191919132025

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Casmir is a spelling of Casimir — from the Slavic Kazimierz, variously 'one who proclaims/establishes peace' and 'destroyer of peace' (kaziti + mir; routes layered, which we note). A crisp, classic name (said 'KAZ-meer').

In the U.S. it appears in Polish and Slavic families. Rare in this form, one-who-proclaims-peace at the root, and crisp.

Did you know? Casimir is Slavic, variously 'one who proclaims peace' and 'destroyer of peace' (kaziti + mir) — Casmir is a spelling, crisp and classic (the routes are layered, which we note; said 'KAZ-meer').
Overall data confidence 32%
References — Casimir — Slavic; routes layered

Variations

CasimirKazimierzKazimir

Nicknames

Caz

Famous Bearers

  • Famous bearers coming soon.

If you like Casmir…

Casimir— the standard spelling
Kazimir— a kin spelling
Vladimir— a fellow -mir Slavic boys' name
Cashmir— shares the -ir ending
Kaimir— shares Casmir's Slavic roots

Explore names like Casmir

By themeuncertainslavicpolish
By meaningPeace

All themes →All meanings →All origins →

Frequently Asked

What does the name Casmir mean?

Casmir spells Casimir — Slavic, variously 'one who proclaims peace' and 'destroyer of peace'; the routes are layered.

How do you pronounce Casmir?

It's said KAZ-meer /kaez.mir/ — two syllables, stress on the first.

Is Casmir a boy or girl name?

Casmir is a boy's name.

How popular is Casmir?

Casmir is a very rare name in the U.S.

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