Sap Yai district
Sap Yai 
    ซับใหญ่  | |
|---|---|
District location in Chaiyaphum province  | |
| Coordinates: 15°38′30″N 101°37′48″E / 15.64167°N 101.63000°E | |
| Country | Thailand | 
| Province | Chaiyaphum | 
| Seat | Sap Yai | 
| Area | |
 • Total  | 171.0 km2 (66.0 sq mi) | 
| Population  (2005)  | |
 • Total  | 13,466 | 
| • Density | 78.8/km2 (204/sq mi) | 
| Time zone | UTC+7 (ICT) | 
| Postal code | 36130 | 
| Geocode | 3616 | 
Sap Yai (Thai: ซับใหญ่, pronounced [sáp jàj], Northeastern Thai: ซับใหญ่, pronounced [sàp ɲāj]) is a district (amphoe) of Chaiyaphum province, northeastern Thailand.