Akio Jissoji (実相寺昭雄, Jissōji Akio, March 29, 1937 – November 29, 2006) was a Japanese television and film director best known outside Japan for the 1960s tokusatsu TV series Ultraman and Ultraseven, as well as for his auteur erotic ATG-produced Buddhist trilogy Mujo (無常), Mandala (曼陀羅), and Uta (哥).

Every project he directed, from children's action shows to disturbing adult films had an uncompromising approach to cinematic story telling.

His career is also unusual in that he went back and forth from children's television to film projects that were sexually provocative in some way or another.

Sadomasochistic and non-consensual sexual practices are featured in many of his film works with women receiving the brunt of the abuse.

Other notable films include: He died of stomach cancer, aged 69, in his birth city of Tokyo in 2006 just after starting work on a revival of his Silver Mask live action children's show.