Hisayuki Toriumi(鳥海 永行Toriumi Hisayuki, born July 9, 1941 in Aizuwakamatsu, Kanagawa Prefecture, Japan, died February 9, 2009) was a Japanese director best known for having directed the television program Science Ninja Team Gatchaman. He also created several anime and manga series. He was credited in some sources as Eiko Toriumi.