Ban Phai district
Ban Phai 
    บ้านไผ่  | |
|---|---|
District location in Khon Kaen province  | |
| Coordinates: 16°3′36″N 102°43′51″E / 16.06000°N 102.73083°E | |
| Country | Thailand | 
| Province | Khon Kaen | 
| Area | |
 • Total  | 477.7 km2 (184.4 sq mi) | 
| Population  (2007)  | |
 • Total  | 101,031 | 
| • Density | 211.5/km2 (548/sq mi) | 
| Time zone | UTC+7 (ICT) | 
| Postal code | 40110 | 
| Geocode | 4010 | 
Ban Phai (Thai: บ้านไผ่, pronounced [bâːn pʰàj]; Northeastern Thai: บ้านไผ่, pronounced [bâːn pʰāj]) is a district (amphoe) of Khon Kaen province, northeastern Thailand.