Given name
Casmir
“one who demands peace”
Casmir is a variant of Casimir. One Slavic interpretation is “one who demands peace.”
Meaning & origin
What it means
Casmir is a variant of Casimir. One Slavic interpretation is “one who demands peace.”
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1913. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Casmir through the years
- Babies since 1880
- 356
- 342 boys · 14 girls
- Most popular year
- 1918
- 24 babies
- 2025
- 6
- #10,909 for boys
- 2021–25 vs 2016–20
- +100%
- Rising fast
By the numbers
In 2025, this name appeared in 6 U.S. birth records for boys, ranking No. 10,909 among boys’ names. The recent annual counts are too incomplete to establish a ten-year comparison. Published U.S. population figures for this spelling include 245 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
The ring: nicknames and forms.
Nicknames & forms 2
Diminutives, pet forms, short forms and variants used alongside the name.
Similar names
If you love Casmir, these share its style, era, origin or sound, from outside its own family.
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