| Casaletto Vaprio | |
| Official Name: | Comune di Casaletto Vaprio |
| Coordinates: | 45.4°N 47°W |
| Region: | Lombardy |
| Province: | Cremona (CR) |
| Mayor: | Ilaria Dioli |
| Area Total Km2: | 5.4 |
| Population Total: | 1761 |
| Population As Of: | 28 February 217[1] |
| Population Demonym: | Casalettesi |
| Elevation M: | 87 |
| Postal Code: | 26010 |
| Area Code: | 0373 |
Casaletto Vaprio (Casalèt) is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 35km (22miles) east of Milan and about 45km (28miles) northwest of Cremona. Notable natives include the composer Stefano Pavesi.
Casaletto Vaprio borders the following municipalities: Campagnola Cremasca, Capralba, Cremosano, Quintano, Trescore Cremasco.
Casaletto Vaprio has a railway station on the Treviglio–Cremona line.