Ōnokuni Yasushi is a Japanese former professional sumo wrestler from Hokkaidō. Making his professional debut in 1978, he reached the top division in 1983. In 1987 he won his first yūshō or tournament championship with a perfect record and became the sport's 62nd yokozuna. However, he was only able to win one more championship before his retirement in 1991. He has remained in sumo as a coach and in 1999 became the head of Shibatayama stable. He was elected to the Japan Sumo Association's board of directors in 2018.

The Japan Sumo Association , sometimes abbreviated JSA or NSK, is the body that operates and controls professional sumo wrestling in Japan under the jurisdiction of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). This means concretely that the Association maintains and develops sumo traditions and integrity by holding tournaments and tours. The purposes of the Association are also to develop the means dedicated to the sport and maintain, manage and operate the facilities necessary for these activities. Therefore, the JSA operates subsidiaries such as the Kokugikan Service Company to organize its economic aspects, the Sumo School to organize training and instruction or the Sumo Museum to preserve and utilize sumo wrestling records and artefacts.