
Kōki Mitani (三谷 幸喜, Mitani Kōki; born July 8, 1961) is a Japanese playwright, screenwriter, actor and film director. He studied dramatics at Nihon University. He has been described by The Japan Times as "far and away the nation's best-known dramatist". In 2023, Mitani was the recipient of the 15th annual Juzo Itami Award.

Murder of the Inugami Clan
2006 · as Nasu Hoteru Shujin

What Happened to Our Nest Egg!?
2021 · as Moriguchi

Round About Midnight
1999 · as Man Watching TV

90 Years Old – So What?
2024 · as Taxi driver

A Flawless Concierge
2011 · as The Film Director

Ryoma's Wife, Her Husband and Her Lover
2002

72nd NHK Kōhaku Uta Gassen
2021

Tales of the Bizarre 20th Anniversary Spring Special: Popular Episode Competition
2010