Injong of Goryeo, personal name Wang Hae, was the 17th monarch of the Korean Goryeo dynasty. He was the eldest son of King Yejong and Queen Sundeok, the daughter of Yi Cha-gyŏm. His reign saw two major internal crises that nearly ended the Goryeo dynasty, the collapse of the Northern Song dynasty, and the establishment of the Jin dynasty as the dominant power in East Asia.

Samguk Sagi is a historical record of the Three Kingdoms of Korea: Goguryeo, Baekje and Silla. Completed in 1145, it is well known in Korea as the oldest surviving chronicle of Korean history.