| Princess Hyohoe 효회공주 | |
| Princess Heungdeok (흥덕궁주, 興德宮主) | |
| Birth Date: | 1183 |
| Birth Place: | Kingdom of Goryeo |
| Death Date: | 1199 (aged about 17) |
| Death Place: | Kingdom of Goryeo |
| Spouse: | Wang Chun; fifth cousin once removed |
| Spouse-Type: | Husband |
| Royal House: | House of Wang (by birth and marriage) |
| Father: | Sinjong of Goryeo |
| Mother: | Queen Seonjeong |
Princess Hyohoe (; 1183–1199) or posthumously called Princess Heungdeok was a Goryeo Royal Princess as the first and oldest daughter of King Sinjong and Queen Seonjeong[1] who was born when her father was still the Duke Pyeongnyang (평량공) and was the younger sister of King Huijong.[2]
She married Wang Ch'un (왕춘) who was the descendant of Wang Ki, Duke Pyeongyang, the son of King Hyeonjong[3] and then given a title as Duke Hawon (하원공). However, she later died in 1199 at 17 years old.[4] Her death made her parents become very sad.[5] After her death, her husband remarried with Princess Suryeong, only daughter of King Gangjong.[6]