| Country | ASIA |
|---|---|
| Route | 15 |
| Length | 566 km |
| Direction a | North |
| Terminus a | Vinh, Vietnam |
| Direction b | South |
| Terminus b | Udon Thani, Thailand |
| Countries | Vietnam Laos Thailand |
| Previous route | 14 |
| Next route | 16 |
Asian Highway 15 (AH15) is a road in the Asian Highway Network running 566 kilometres (352 mi) from Hồng Lĩnh, Vietnam to Udon Thani, Thailand connecting AH1 to AH12. The route is as follows:
Vietnam
Laos
Thailand
- Route 295: Third Thai–Lao Friendship Bridge
- Route 212: At Samat - Nakhon Phanom
- Route 22: Nakhon Phanom - Udon Thani