- Gender: Male
- Birthday: 1906-01-02
- Day of Death: 1973-07-18 ( 67 years old )
- Place of Birth: Niigata, Japan
- Also Known As: 三島雅夫
Masao Mishima was born on January 2, 1906 in Niigata, Japan as Masao Nagaoka. He was an actor, known for Seppuku (1962), Banshun (1949) and Jôi-uchi: Hairyô tsuma shimatsu (1967). He died on July 18, 1973 in Tokyo, Japan.