Kōichi Sugiyama (すぎやま こういち, Sugiyama Kō'ichi?) (his birth name is 椙山 浩一, which is pronounced the same) (born April 11, 1931) is the lead composer of the Dragon Quest game series, with other works done for Japanese TV shows, such as Space Runaway Ideon, Cyborg 009, and Gatchaman.