Crown Prince Uigyeong (Korean: 의경세자; Hanja: 懿敬世子; 3 October 1438 – 20 September 1457), personal name Yi Jang (Korean: 이장; Hanja: 李暲) and formerly called as Prince Dowon (Korean: 도원군; Hanja: 桃源君) was a Crown prince of the Korean Joseon Dynasty. He was the oldest son of Sejo of Joseon and Queen Jeonghui, also the older brother of Yejong of Joseon. He was the spouse of Queen Insu and the biological father of Seongjong of Joseon.