Nitta Yoshisada was a samurai lord of the Nanboku-chō period Japan. He was the head of the Nitta clan in the early fourteenth century, and supported the Southern Court of Emperor Go-Daigo in the Nanboku-chō period. He famously marched on Kamakura, besieging and capturing it from the Hōjō clan in 1333.

Emperor Go-Daigo was the 96th emperor of Japan, according to the traditional order of succession. He successfully overthrew the Kamakura shogunate in 1333 and established the short-lived Kenmu Restoration to bring the Imperial House back into power. This was to be the last time the emperor had real power until the Meiji Restoration in 1868. The Kenmu restoration was in turn overthrown by Ashikaga Takauji in 1336, ushering in the Ashikaga shogunate. The overthrow split the imperial family into two opposing factions between the Ashikaga backed Northern Court situated in Kyoto and the Southern Court based in Yoshino. The Southern Court was led by Go-Daigo and his later successors.