Meaning A boy's name of Polish origin, it means "Variant of Casimir: Bringer of peace; announcing peace." Origin of Castimer Polish , Slavic Popular Middle Names Pronunciation 🔊 Listen Castimer Similar Names Jedrus Bialy Metody Slawek Sulislaw Zdzislaw Aurelian Flawiusz Gerik Gnegon Year by Year Popularity of Castimer