Jinzō Toriumi (鳥海 尽三, Toriumi Jinzō, February 1, 1929 – January 17, 2008) was a Japanese screenwriter who first began his career during the "revolutionary era" of Japanese animation on Mach GoGoGo (Speed Racer), Science Ninja Team Gatchaman (Battle of the Planets/G-Force), and Yatterman.

After trying his hand at live-action at Nikkatsu, he began writing animation scripts at Mushi Productions for Mighty Atom (Astro Boy) in 1964.

He used the Anime Scenario Nyūmon book when he became a vocational school teacher for future generations of scriptwriters.

He received the (Scenario) Scriptwriting Award from the Japan Writers Guild on May 26, 2000.

[1] On January 17, 2008, he succumbed to liver cancer in a Tokyo hospital, aged 78.