| Lady Dongsanwon 동산원부인 | |
| Succession: | Royal consort of Goryeo |
| Reign-Type: | Tenure |
| Predecessor: | Lady Sogwangjuwon |
| Successor: | Lady Yehwa |
| Father: | Pak Yŏng-gyu |
| Mother: | Kyŏn Ae-bok |
| Spouse: | Taejo of Goryeo |
| Birth Date: | ? |
| Birth Place: | Suncheon, South Jeolla Province |
| Death Date: | ? |
| Death Place: | Suncheon, South Jeolla Province |
| House: | Suncheon Pak clan |
| Religion: | Buddhism |
Lady Dongsanwon of the Suncheon Pak clan[1] (;) was the eldest maternal granddaughter of Kyŏn Hwŏn and daughter of Pak Yŏng-gyu.[2] She became the 18th wife of King Taejo of Goryeo[3] and was the oldest, among Queen Mungong and Queen Munseong who both became Jeongjong's wives.