Ja Mazz (born August 11, 1989) is a South Korean rapper.The stage name ‘Ja Mezz’ is said to be derived from his English name, ‘James’. Appeared in Mnet’s hip-hop audition program 《Show Me The Money 3》, which aired in 2014, and advanced to the 3rd preliminary round, but lost in a 1:1 match against Bobby.