Aejang of Silla (788–809) (r. 800–809) was the 40th ruler of the Korean kingdom of Silla. He was the eldest son of King Soseong and Queen Gyehwa. He married a lady of the Pak clan.
In 802, Aejang had the great temple of Haeinsa built on Gayasan. In 803, he formed an alliance with Wa. In 806, he forbade the building of new temples. In 809, he was slain by his uncle Kim Eon-seung, who had been regent and took the throne for himself. Luxury to was hangrak and aejangwang year 809 jeong with gimeonseung brother revolted and broke into the royal palace, went the aejangwang with brother chemyeong was killed.