| Seongsan-gu | |
| Native Name Lang: | ko |
| Settlement Type: | Non-autonomous District |
| Translit Lang1: | Korean |
| Translit Lang1 Type1: | Hangul |
| Translit Lang1 Info1: | 성산구 |
| Translit Lang1 Type2: | Hanja |
| Translit Lang1 Info2: | 城山區 |
| Translit Lang1 Info3: | Seongsan-gu |
| Translit Lang1 Info4: | Sŏngsan-ku |
| Mapsize: | 280px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Yeongnam |
| Population Blank1 Title: | Dialect |
| Population Blank1: | Gyeongnam |
| Area Total Km2: | 81.34 |
| Population As Of: | 2010 |
| Population Total: | 245961 |
| Population Density Km2: | 3023.86 |
| Parts Type: | Administrative divisions |
Seongsan is a district in Changwon City, South Korea.[1]