The 1336 battle of Tatarahama (多々良浜の戦い, Tatarahama no tatakai) was one of many battles constituting the Nanboku-chō Wars in Japan, in which two rival Imperial Courts battled for legitimacy and control of the country. It was decisive in securing control of the island of Kyūshū for the Northern Imperial Court, which was closely connected to the Ashikaga shogunate.