Chai Wan district
| Chai Wan ไชยวาน | |
|---|---|
| District location in Udon Thani province | |
| Coordinates: 17°17′12″N 103°13′24″E / 17.28667°N 103.22333°E | |
| Country | Thailand | 
| Province | Udon Thani | 
| Seat | Chai Wan | 
| Area | |
|  • Total | 326.155 km2 (125.929 sq mi) | 
| Population  (2007) | |
|  • Total | 38,209 | 
| • Density | 117.2/km2 (304/sq mi) | 
| Time zone | UTC+7 (ICT) | 
| Postal code | 41290 | 
| Geocode | 4108 | 
Chai Wan (Thai: ไชยวาน, pronounced [t͡ɕʰāj wāːn]) is a district (amphoe) in the southeastern part of Udon Thani province, northeastern Thailand.