Masutatsu Oyama
- Born
- 4 June 1923 (70 years old)
- Passed away
- 26 April 1994
- Place of birth
- Gimje, North Jeolla, South Korea
- Gender
- Male
Masutatsu Ōyama, born Choi Yeong-eui (Hangul: 최영의 Hanja: 崔永宜), more commonly known as Mas Oyama, was a karate master who founded Kyokushin Karate, considered the first and most influential style of full contact karate. A Zainichi Korean, he spent most of his life living in Japan and acquired Japanese citizenship in 1968.
