Ishinriki Koji (born 24 January 1961 as Koji Iihashi) is a former sumo wrestler from Suginami, Tokyo, Japan.
His highest rank was juryo 1.
He was one of the smallest sekitori ever at 175 cm (5 ft 9 in) and 85 kg (187 lb).
After his retirement in 1990 he became a professional wrestler for a number of organizations including Super World of Sports, WAR, Pro Wrestling Crusaders and IWA Japan.