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Nihon Jujutsu is a system of self-defense based on techniques found in modern and historical Japanese martial arts. Training includes evasion, striking, throwing, and immobilization.

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Image Gallery of Jujutsu technique (waza), Japanese Scenery, Important Martial Arts figures, and more!

About INJA


INJA Information | Learn about our founder Satoh Shizuya, our Shihan John Gage, our heritage, and our affiliations.

Sato Shizuya, Founder Nihon Jujutsu (1929 - 2011)


Sato Shizuya, born 1929 in Tokyo, Japan, is the founder of Nihon Jujutusu. Learn more about Satoh Sensei here.

John B. Gage Shihan


John Gage is Senior Instructor (Shihan) of the International Nihon Jujutsu Association. Read more about Gage Sensei here.



The following world-renown Japanese martial artists influenced or directly contributed to the development of Nihon Jujutsu.



The following masters of Japanese traditional martial arts, Judo and Aikido particularly, provided guidance and inspiration for Sato Sensei and the creation Nihon Jujutsu.



Dojo, organizations and affiliations of the International Nihon Jujutsu Association



Contact the International Nihon Jujutsu Association (INJA). We would love to hear from you!



Here you will find Information, Registration and schedules for events sponsored by the International Nihon Jujutsu Assocication (INJA).

INJA Membership


INJA is an international organization of martial artists dedicated to the Traditional Japanese Martial Arts.



Become a friend of the International Nihon Jujutsu Association (INJA). It's free!



Receive up to date news about events andother activities via our newsletter, 5% discount at all sanctioned events, and more!

Executive Member


Executive Membership is reserved for individuals of outstanding character and credentials. Please contact INJA for more information:

Registered Member


Become a Registered Member of the International Nihon Jujutsu Association (INJA)