Japan Sumo Association

The Japan Sumo Association (JSA or NSK) is a publicly owned organization founded in 1925 and headquartered in Japan. It operates and controls professional sumo wrestling in the country under the jurisdiction of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). The association's main product is martial arts, specifically sumo wrestling. Its primary responsibilities include maintaining and developing sumo traditions and integrity by organizing tournaments and tours. Additionally, the JSA aims to foster the growth of sumo as a sport, manage and maintain necessary facilities, and operate subsidiaries like the Kokugikan Service Company, Sumo School, and Sumo Museum to support these activities. As of 2023, the association's latest reported revenues were approximately $100 million.