Kiyokuni Katsuo (born 20 November 1941 as Tadao Sato) is a former sumo wrestler from Ogachi, Akita, Japan. His highest rank was ōzeki, which he held from 1969 to 1974. He won one top division yūshō or tournament championship and was a runner-up in five other tournaments. He also earned seven special prizes and seven gold stars. After his retirement he was the head coach of Isegahama stable.
Source: “Kiyokuni Katsuo”, English Wikipedia (CC BY-SA 4.0), excerpt