Nameling

Casimir

Gender
Boy
Origin
Slavic
US rank, 2025
#2,035 for boys

Casimir is a boys' name of Slavic origin, meaning “proclamation of peace”. In 2025 it ranked 2,035th for boys in the US (73 babies).

What does Casimir mean?

Slavic

“proclamation of peace”

A male given name from Polish.

From Wiktionary, CC BY-SA 4.0.

Is Casimir a girl's or a boy's name?

Casimir is a boys' name. In 2025, it was given to 73 boys in the US. Too few girls were given it to be listed.

How popular is Casimir in the UK?

No boys in the UK were given it in 2025, or too few to be listed. Its busiest year was 2009, with 6 boys.

1997Busiest: 6 in 20092024
Casimir in the UK, year by year
YearBoysRank
20245#3,772
20230–
20223#5,017
20213#4,989
20204#4,025
20190–
20186#3,162
20170–
20160–
20153#4,955
20140–
20130–
20122#6,266
20110–
20103#4,865
20096#2,970
20084#3,836
20070–
20060–
20050–
20040–
20030–
20020–
20010–
20000–
19990–
19980–
19973#2,979

How popular is Casimir in the US?

Rank in 2025
#2,035among boys
Babies in 2025
73about 1 in 23,000 boys
Five-year trend
Rising fastup 113% in five years
Same name in a class
under 1%chance among 15 boys

In 2025, 73 boys in the US were named Casimir, making it the 2,035th most popular name for boys. Five years earlier, in 2020, it was 3,650th. Its busiest year was 1919, with 220 boys. It first appears in the records in 1894.

2025 had more boys named Casimir than any year since 1933.

Half of all the boys named Casimir in the US since 1880 were born between 1919 and 1959, the years shaded on the chart below.

In 2025, 79 boys in the US were given Casimir or a name that sounds the same. With every name's spellings counted this way, that ranks #1,694, up from #2,035 for this spelling alone.

1894Busiest: 220 in 19192025
Casimir in the US, year by year
YearBoysRank
202573#2,035
202459#2,370
202358#2,361
202258#2,407
202140#3,020
202029#3,650
201929#3,713
201831#3,520
201724#4,220
201629#3,680
201534#3,298
201431#3,454
201337#2,996
201223#4,248
201122#4,354
201024#4,098
200922#4,427
200828#3,741
200725#4,009
200615#5,521
200523#3,937
200423#3,855
200314#5,265
200223#3,665
200111#6,006
200016#4,567
199913#5,029
199814#4,645
199719#3,596
199610#5,528
199510#5,495
199412#4,797
199313#4,440
199217#3,597
19919#5,513
199020#3,052
198917#3,319
198811#4,157
198711#3,954
19866#5,920
198515#3,067
198417#2,705
198310#3,882
198215#2,971
198114#3,028
198016#2,830
197910#3,808
19789#3,855
197713#3,036
19769#3,722
19755#5,462
197412#2,944
197310#3,221
197210#3,150
197110#3,144
197011#2,890
196910#2,860
196818#1,893
196711#2,469
19667#3,247
196515#2,083
196412#2,408
196316#2,043
196211#2,502
196117#1,996
196016#2,041
195913#2,294
195822#1,676
195715#2,092
195618#1,885
195524#1,571
195430#1,381
195335#1,260
195231#1,346
195129#1,372
195035#1,219
194929#1,347
194830#1,322
194723#1,554
194627#1,354
194538#1,038
194429#1,235
194337#1,120
194244#1,007
194132#1,169
194036#1,090
193931#1,168
193842#977
193742#967
193639#1,010
193546#930
193451#881
193374#694
193256#852
193172#717
193093#634
192988#657
192898#617
1927104#610
1926114#580
1925123#558
1924163#485
1923152#497
1922168#477
1921188#449
1920206#413
1919220#394
1918179#444
1917205#393
1916181#414
1915178#403
1914106#469
191395#436
191267#481
191129#562
191017#729
190916#679
190824#513
190712#778
190613#674
190512#699
19046#1,063
19036#1,009
19028#861
19017#857
19007#1,049
18997#856
18980–
18975#1,056
18968#825
18956#977
18945#1,073

Names like Casimir

Names given in the same years and the same naming tradition, with a similar sound.

Names related to Casimir

More Slavic names

Every Slavic name

Sources

Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.

To cite this page: Nameling, “Casimir: name meaning, origin and popularity”, https://www.nameling.co.uk/names/casimir, updated 20 October 2026.