Japan Sumo Association
The Japan Sumo Association (Japanese: 日本相撲協会, Hepburn: Nihon Sumō Kyōkai), officially the Public Interest Incorporated Foundation Japan Sumo Association (公益財団法人日本相撲協会, Kōeki zaidanhōjin Nihon Sumō Kyōkai); sometimes abbreviated JSA or NSK, and more usually called Sumo Kyōkai, is the governing body that operates and controls professional sumo wrestling, called ōzumō (大相撲), in Japan under the jurisdiction of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). Concretely, the association maintains and develops sumo traditions and integrity by holding tournaments and tours.