Yi Ŭi-bang (Korean: 이의방; Hanja: 李義方; 1121 – 12 January 1175) was a military ruler of Korea during the Goryeo period.
In August 1170 (Uijong 24th year), he joined the Goryeo warrior rebellion, which occurred in defiance against the typically minister ruled Korea.
Primary leaders of this rebellion was Chŏng Chung-bu and Yi Ko who found that warrior-class treatment was truly unfair and planned a coup d'état to establish a warrior government.
With Chong, Yi increased the size and power of the military and attracted military-class administrators to the regime and appointed these men to national offices which were previously reserved for scholar-class ministers.
General Yi Ŭi-bang's main legacy remains in the balance that was achieved through the purging of scholars during his co-governance with Chong.