Jason \j(a)-son\ as a boy's name is pronounced JAY-sun. It is of Greek and Hebrew origin, and the meaning of Jason is "healer; the Lord is salvation". Variant of Joshua. Biblical: an early Christian associate of Paul. Greek mythology: Jason was leader of a group of warrior heroes called the Argonauts. Singer J'son; actors Jason Robards, Jason Lee, Jason Priestley, Jason Patric, Jason Biggs.