Kim Hŏnch'ang (died 822) was the leader of an aristocratic rebellion in early ninth-century Unified Silla.
The rebellion went on to seize Jeonju, Sangju, Chungju, and Gimhae, thus gaining control over much of the southern and western Korean peninsula.
[2] After a month's fighting, the royal faction was able to regain much of the territory that Kim Hŏnch'ang's forces had taken.
With the fall of Ungju imminent, which had been the center of the rebellion, Kim Hŏnch'ang killed himself to avoid capture by the royal army.
[3] Three years later, his son Kim Pŏmmun rekindled the rebellion, but was shortly thereafter also crushed by the royal army.