| Disputed: | yes |
| Type: | atoll |
| Alison Reef | |
| Other Names: | Đá Tốc Tan (Vietnamese) De Jesus Reef(Philippine English) Bahura ng De Jesus (Filipino) 六门礁 Liùmén jiāo (Chinese) |
| Pushpin Map: | Spratly Islands relief |
| Location: | South China Sea |
| Coordinates: | 8.8117°N 113.9833°W |
| Archipelago: | Spratly Islands |
| Country Admin Divisions Title: | District |
| Country Admin Divisions: | Trường Sa District |
| Country Admin Divisions Title 2: | Township |
| Country Admin Divisions 2: | Trường Sa Township |
Alison Reef (Filipino; Pilipino: Bahura ng De Jesus; Tốc Tan Reef (Vietnamese: Đá Tốc Tan); Mandarin) is a reef on 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]