| Princess Heungsu | |
| Succession: | Princess of Goryeo |
| Coronation: | 1102 |
| Predecessor: | Princess Daeryeong |
| Successor: | Princess Ansu |
| Regent: | Wang Ong, King Sukjong |
| Reg-Type: | Monarch |
| Birth Date: | 1088 |
| Birth Place: | Goryeo |
| Death Date: | 1123 (aged 35) |
| Death Place: | Goryeo |
| Spouse: | Wang Jeong; second cousin |
| Issue: | Wang Gi Wang Jae |
| House: | House of Wang (by birth and marriage) |
| Father: | Sukjong of Goryeo |
| Mother: | Queen Myeongui of the Jeongju Yu clan |
Princess Heungsu (; 1088–1123) was a Goryeo Royal Princess as the second daughter of King Sukjong and Queen Myeongui[1] who later married her uncle's son–Wang Jeong the Count Seunghwa, and received "2,000 sik-eup" (식읍 2,000호) and "300 sik-sil" .[2]
She firstly received her title and honor as a princess in 1102 (7th years reign of her father) and in 1105 (her eldest brother's ascension), she was given the "Sungdeok Palace" as her own mansion.[3] That same year, Heungsu gave birth to her first son and upon hearing this, her eldest brother sent Gim Go on board to gave many gifts to her.[4] According to the records that were left and found, she bore Wang Jeong two sons: Wang Gi and Wang Jae . Meanwhile, the princess died in 1123 (ascension year of her nephew) and her husband died seven years after her in 1130.