Prince Wonjang
| Prince Wonjang | |
|---|---|
| Prince of Goryeo | |
| Spouse | Princess Heungbang |
| Issue | Prince Heungbang Lady Daemyeong |
| House | House of Wang |
| Father | Taejo of Goryeo |
| Mother | Queen Jeongdeok of the Chŏngju Yu clan |
| Religion | Buddhism |
Prince Wonjang (Korean: 원장태자; Hanja: 元莊太子) was a Goryeo Royal Prince as the third son of King Taejo and Queen Jeongdeok who married his half sister, Princess Heungbang and had a son and a daughter who would become King Gyeongjong's 5th wife.