Nao Ōmori (born 1972 in Tokyo) is a Japanese film and television actor, son of actor and butoh dancer Akaji Maro and brother of film director Tatsushi Ōmori. He became internationally known for the lead role in Takashi Miike's cult film Ichi the Killer (2001) and won Best Supporting Actor at the Yokohama Film Festival for Vibrator (2003); he also voiced a character in the Studio Ghibli animated film From Up on Poppy Hill.
Ómori appeared in the cast of Broken Rage by Takeshi Kitano, which had its world premiere at the 81st Venice Film Festival.
The actor played the lead role of detective Shuji Igaki in the television series The Big Chase: Tokyo SSBC Files, which continued with a second series in 2026.
In the 2026 series Soda Master, he played the lead role of Hajime Fujimaki, nicknamed Chen.
