Son of Kim Ju-won who founded the state of Jang'an and rebelled at Ungcheon in 822
| Life | 822 |
| Era | 통일신라 |
| Clan | 강릉 김씨 |
Kim Heon-chang (金憲昌, died 822) was a Silla royal-family member, son of Kim Ju-won, and rose to the rank of Ichan. He became Sijung in 807 and, after serving as governor of Mujinju and Cheongju, was transferred to Ungcheonju in 821.
In the third month of 822 he rebelled at Ungcheonju on the grounds that his father had been denied the throne by King Wonseong, naming his state Jang'an (長安) and his era Gyeongun (慶雲), and subjugated many provinces and secondary capitals. Defeated by government forces, he killed himself after a ten-day siege, and 239 of his family and leaders are said to have been executed.
In 825 his son Kim Beom-mun rebelled again at Bukhansanju but was killed in defeat.
The rebellion of Kim Heon-chang, justified by his father's loss of the throne, is recorded in the reign of King Heondeok in the Samguk Sagi. It is explained as further estranging the Myeongju region from the Silla court.
Sons recorded are Kim Beom-mun and Kim Bun. See also the Gangneung Kim clan page.