Casmir \c(a)-smir, cas-mir\ as a boy's name is a variant of Casimir (Slavic), and the meaning of Casmir is "famous destroyer (of peace)".

The baby name Casmir sounds like Casmire, Kasimir and Casimiro. Other similar baby names are Cadmar, Casar, Caspar, Casper, Castor and Caster.