Koutetsushin Jeeg (鋼鉄神ジーグ, Kōtetsushin Jīgu, lit. Steel God Jeeg) is a 13-episode Japanese television anime sequel to the 1975 Super Robot series Steel Jeeg, created by Go Nagai. It is directed by Jun Kawagoe (previously known for New Getter Robo and Innocent Venus). This 21st century sequel began airing on the satellite network WOWOW on April 5, 2007 at 11:30 p.m. JST.

Press material describes Koutetsu Jeeg as "A simple tale of 'Good versus Evil' while at the same time [being] a robot anime created for the sake of the adult core audience."

On February 19, 2007, it was announced that the JAM Project song "STORMBRINGER" would be the opening theme.