Tatsushi Ōmori
- Birthday: 1970-09-04
- Place of birth: Tokyo, Japan
- Also know as: Tatsushi Ômori
Tatsushi Ōmori (大森立嗣, Ōmori Tatsushi, born 4 September 1970) is a Japanese film director and actor. He's the eldest son of famous actor and butoh dancer Akaji Maro. He's the oldest brother of actor Nao Ōmori.
