| Disputed island | |
|---|---|
 Sentinel-2 Image (October 2022) | |
  Subi Reef | |
| Other names | Zhubi Reef 渚碧礁 Zhǔbì Jiāo (Chinese) Zamora Reef (Philippine English) Bahura ng Zamora (Filipino) đá Xu Bi (Vietnamese) |
| Geography | |
| Location | South China Sea |
| Coordinates | 10°54′48″N 114°03′43″E / 10.9133°N 114.062°E |
| Archipelago | Spratly Islands |
| Area | 0 km2 (0 sq mi) (Natural) 3.95 km2 (1.53 sq mi) (Reclaimed) |
| Administration | |
| Province | Hainan |
| prefecture-level city | Sansha |
| Claimed by | |
Subi Reef, also known as Đá Xu Bi (Vietnamese: Đá Xu Bi); Zamora Reef (Filipino: Bahura ng Zamora, lit. 'Reef of Zamora'); Zhubi Reef (Chinese: 渚碧礁; pinyin: Zhǔbì Jiāo), is an atoll in the Spratly Islands of the South China Sea located 26 km (16 mi) southwest of Thitu Island. It is occupied by China, and claimed by the Philippines, Taiwan and Vietnam.