
The Aikikai is the original school of Aikido. It is centered on the Aikikai Foundation in Japan, and its figurehead is the Doshu. It is represented globally through the International Aikido Federation.

Budo Senmon Gakko also known as Butoku Gakko, Bujutsu Senmon Gakko, or Busen (武専), was a school for training young men and women in Japanese martial arts. There were four departments; kendo, judo, naginata and kyūdō.

International Lethwei Federation Japan, also known as ILFJ, is a Japanese Lethwei promotion company founded in 2016. The company has its headquarters in Tokyo.

Kokusai Budoin, International Martial Arts Federation (IMAF) is the oldest continuously operating Japanese organization promoting international Budō. The organization, founded in 1952, has headquarters in Tokyo, Japan.

IPSC Japan is the Japanese association for practical shooting under the International Practical Shooting Confederation.

The Japan Professional Baseball Players Association is the players' union that represents Japanese baseball players and their interests in Nippon Professional Baseball. The organization was incorporated in 1980 and was approved as a labor union in 1985. The current union chairman is Ginjiro Sumitani and the current institute chairman is Yohei Oshima.

Kyokushin (極真) is a style of stand-up fighting and was founded in 1964 by Korean-Japanese Masutatsu Oyama . "Kyokushin" is Japanese for "the ultimate truth". It is rooted in a philosophy of self-improvement, discipline and hard training. Its full contact style has international appeal.

Pride Fighting Championships was a Japanese mixed martial arts promotion company. Its inaugural event was held at the Tokyo Dome on October 11, 1997. Pride held more than sixty mixed martial arts events, broadcast to about 40 countries worldwide. Pride held the largest live MMA event audience record of 91,107 people at the Pride and K-1 co-production, Shockwave/Dynamite, held in August 2002, as well as the audience record of over 67,450 people at the Pride Final Conflict 2003. For ten years PRIDE was one of the most popular MMA organizations in the world.

RisingOn (ライジングオン) is a mixed martial arts organization promoted by Versus.Co.,Ltd., a Japanese private company. Atsushi Tanabe serves as the manager of Versus. Events are generally held in the Kansai area.

World Victory Road (WVR) is a defunct Japanese mixed martial arts (MMA) organization which promoted the Sengoku Raiden Championship (SRC) in Japan. The organization was formed in 2007 following the purchase of PRIDE FC by Zuffa. It operated in conjunction with the Japan Mixed Martial Arts Federation (JMM). The Sengoku championship was broadcast on Fuji TV and pay-per-view in Japan, and on HDNet in United States.

ZST is a Japan-based mixed martial arts promotion and sanctioning organization holding amateur and semi-professional MMA events. ZST adopts unique rules in the MMA industry and also used to hold tag-team MMA matches.