Mendy Werdyger (born 1959, Brooklyn, New York) is an American Hasidic Jewish singer, songwriter, and owner of the Jewish record label Aderet Records and its retail store, Mostly Music, on 13th Avenue in Boro Park, Brooklyn. In 2010, he released his fifth studio album. He is a son of the famous hazzan (cantor) David Werdyger, brother of popular Jewish singer Mordechai ben David, uncle of singer Yeedle (Mordechai's son), and father of singer Yisroel Werdyger, also known as Sruli Werdyger.