Gongsanseong
| Gongsanseong | |
|---|---|
Part of the fortress (2016) | |
| Coordinates | 36°27′47″N 127°07′35″E / 36.46306°N 127.12639°E |
| Official name | Gongsanseong Fortress, Gongju |
| Criteria | Cultural: (ii), (iii) |
| Designated | 2015 |
| Reference no. | 1477 |
| Designated | 1963-01-21 |
| Reference no. | 12 |
| Korean name | |
| Hangul | 공산성 |
| Hanja | 公山城 |
| Revised Romanization | Gongsanseong |
| McCune–Reischauer | Kongsansŏng |
Gongsanseong (Korean: 공산성; Hanja: 公山城; MR: Kongsansŏng) is a castle in Gongju, South Chungcheong Province, South Korea.