Chiyonoyama Masanobu was a Japanese professional sumo wrestler from Fukushima, Hokkaidō. He was the sport's 41st yokozuna, between 1951 until 1959. He is regarded as the first "modern" yokozuna in that he was promoted by the Japan Sumo Association itself and not the House of Yoshida Tsukasa. He was the first yokozuna from Hokkaidō, which was also the birthplace of the subsequent yokozuna Yoshibayama, Taihō, Kitanoumi and his own recruits Kitanofuji and Chiyonofuji. After his retirement he left the Dewanoumi group of stables and founded Kokonoe stable in 1967. He died in 1977 while still an active stablemaster.
