Meaning A boy's name of Polish origin, it means "Victory." Origin of Wienczyslaw Polish , Slavic Popular Middle Names Pronunciation 🔊 Listen Wienczyslaw Similar Names Waleron Wicus WiMor Mikolai Zdzislaw Zygfryd Aurelian Flawiusz Gerik Gnegon Year by Year Popularity of Wienczyslaw