Meaning A boy's name of Finnish origin, it means "foremost one." Origin of Lasse Finnish , Scandinavian +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Lasse Similar Names Eirik Ingwaz Riku Tuomas Joosef Joosep Jussi Paavo Taneli Yjo Year by Year Popularity of Lasse