Sogō Kazumasa (十河 一存, 1532 – April 2, 1561), other name Sogō Kazunari (十河 和也), fourth son of , was a Japanese samurai of the Sengoku period who was a member of Miyoshi clan, daimyō of Kawachi Province. Miyoshi Nagayoshi (eldest), Miyoshi Yukiyasu (second) and Atagi Fuyuyasu (third) are his elder brothers and Miyoshi Yoshitsugu is his son (later became Nagayoshi's adopted son). He latterly adopted (Yukiyasu's son) his child. His nickname was Oni Sogō because he was well known for his fighting skill and strong like an Oni.