Castimir as a Baby Name. Meaning and Origin of Castimir

What is the meaning of the name Castimir ?

The baby name Castimir is a Male name , 3 syllables long and is pronounced kas-TEE-meer (IPA: /kæsˈtiːmɪr/).

Castimir is Slavic in Origin.

Castimir is a rare modern spelling of Casimir, the Latinized form of Polish Kazimierz. The name goes back to Slavic roots: either kazac/kaziti (“to declare”/“to spoil”) plus mir (“peace, world, prestige”). The prevailing interpretation is “proclaimer of peace” or “bringer of peace,” though an older reading yields the ironic “destroyer of peace.”

Long established across Central and Eastern Europe, the name was borne by Saint Casimir (1458–1484), patron of Poland and Lithuania, and by several Polish kings (notably Casimir the Great). Through Latin Casimirus it spread into other languages and enjoyed a modest revival in the 19th century. Castimir remains uncommon in the Anglophone world, offering a distinctive twist while preserving Slavic heritage. Related forms include Casimir, Kazimierz (Polish), Kazimir (Russian/Serbo-Croatian), Kasimir (German), Cazimir (Romanian), Casimiro (Italian, Spanish, Portuguese), and Kazimieras (Lithuanian); feminine Kazimiera/Casimira. Nicknames include Kazik, Caz, Cass, and Mir.

⚙ We can't find Castimir in any of the birth registries or name datasets we track. It's the kind of name that tends to be rare, regional, or newly made up. However you look at it, very few people share it.