Yi Hyŏn-un

Yi Hyŏnun (; ) was a Goryeo military commander. He was a subordinate of Kang Cho.

Biography In 1009, Yi participated in Kang Cho's coup to destroy Kim Chi-yang's faction, dethrone King Mokjong and install King Hyeonjong. Prior to the coup, he was the vice military inspector of Seobukmyeon and the Vice Minister of Personnel . After the coup, Kang Cho merged the Security Council , the Office of Transmission , and the Institute of Palace Miscellaneousness into the newly formed Palace Secretariat . Kang was appointed as the head of the Palace Secretariat, and Yi Hyŏnun, as his deputy, was made its vice head.

When the Khitan Liao invaded Goryeo in response to the coup in 1010, Yi became Kang's second-in-command, as the haengyŏng tot'ongbusa of the Goryeo army sent to fight the Khitans.

In popular culture Portrayed by Choi Jun-yong in the 2009 KBS2 TV series Empress Cheonchu. Portrayed by Kim Jae-min in the 2023 KBS1 TV series Korea–Khitan War.