Ban Khai district
Ban Khai 
    บ้านค่าย  | |
|---|---|
District location in Rayong province  | |
| Coordinates: 12°47′1″N 101°17′48″E / 12.78361°N 101.29667°E | |
| Country | Thailand | 
| Province | Rayong | 
| Seat | Ban Khai | 
| Area | |
 • Total  | 489.6 km2 (189.0 sq mi) | 
| Population  (2005)  | |
 • Total  | 58,914 | 
| • Density | 120.3/km2 (312/sq mi) | 
| Time zone | UTC+7 (ICT) | 
| Postal code | 21120 | 
| Geocode | 2105 | 
Ban Khai (Thai: บ้านค่าย, pronounced [bâːn kʰâːj]) is a district (amphoe) in the central part of Rayong province, eastern Thailand.