Kaiketsu Masateru (Japanese: 魁傑 將晃, born Teriyuki Nishimori; February 16, 1948 – May 18, 2014) was a Japanese sumo wrestler. He also won two top division tournament championships. After his retirement in 1979 he became a coach. He was also chairman of the Japan Sumo Association from 2010 to 2012.