Kyokushin Kaikan is the martial arts organization founded in 1964 by Korean-JapaneseMasutatsu Oyama (大山倍達, Ōyama Masutatsu), officially the International Karate Organization. Previously, this institution was known as the Oyama Dojo. Since 1964, the style has continued to spread to more than 120 countries, becoming one of the largest martial arts organizations in the world, and in Japan itself.[5][additional citation(s) needed]
^"Black Belt". Black Belt magazine. Active Interest Media, Inc. September 1, 1966. Retrieved January 1, 2018 – via Google Books.
^Chris Crudelli (2008). The Way of the Warrior. Dorling Kindersley Ltd. p. 225. ISBN978-14-0533-750-2.
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