Meaning A girl's name of Polish origin, it means "helper and defender of mankind." Origin of Olesia Polish , Slavic +-100%Zoom level changed to 1 Popular Middle Names Jolie Pronunciation 🔊 Listen Olesia Similar Names Sashenka Drina Kassey Alyx Lexine Alexandra Lexa Sacha Aleksandrina Alecksandra Year by Year Popularity of Olesia