Go! Ushiwaka Koujirou (行け！牛若小太郎, Ike! Ushiwaka Kotarō?, lit. Go! Ushiwaka Koutarou) is a Japanesetokusatsushow produced by Toho that aired from November 12, 1974 to April 5, 1975. It is a followup series to Go! Greenman, but the two series do not share canon with each other. It is the fourth in a series of Tokusatsu shows primarily produced by Toho and Nippon TV.