Dan Sai district
Dan Sai 
    ด่านซ้าย  | |
|---|---|
Phu Lom Lo, part of Phu Hin Rong Kla National Park, the largest wild Himalayan cherry site in Thailand.  | |
District location in Loei province  | |
| Coordinates: 17°16′48″N 101°8′48″E / 17.28000°N 101.14667°E | |
| Country | Thailand | 
| Province | Loei | 
| Seat | Dan Sai | 
| Subdistricts | 10 | 
| Mubans | 99 | 
| Area | |
 • Total  | 1,732.0 km2 (668.7 sq mi) | 
| Population  (2015)  | |
 • Total  | 51,564 | 
| • Density | 28.4/km2 (74/sq mi) | 
| Time zone | UTC+7 (ICT) | 
| Postal code | 42120 | 
| Geocode | 4205 | 
Dan Sai (Thai: ด่านซ้าย; IPA: [dàːn sáːj]) is a district (amphoe) in the western part of Loei province, northeastern Thailand.