| Disputed: | yes |
| South Reef | |
| Type: | reef |
| Other Names: | Đá Nam (Vietnamese) Timog Reef (Philippine English) Bahura ng Timog (Filipino) 奈羅礁 Nàiluó jiāo (Chinese) |
| Pushpin Map: | Spratly Islands relief |
| Location: | South China Sea |
| Coordinates: | 11.3872°N 114.2986°W |
| Archipelago: | Spratly Islands |
| Country Admin Divisions Title: | District |
| Country Admin Divisions: | Trường Sa District |
| Country Admin Divisions Title 2: | Commune |
| Country Admin Divisions 2: | Song Tử Tây Commune |
South Reef (Filipino; Pilipino: Bahura ng Timog); Nam Reef (Vietnamese: Đá Nam); Mandarin, is a reef on the southern part of the North Danger Reef of the Spratly Islands in the South China Sea. The reef has been occupied by Vietnam since 1988. It is also claimed by China (PRC), the Philippines, Vietnam, and Taiwan (ROC).[1] [2] [3]