| Casteldidone | |
| Official Name: | Comune di Casteldidone |
| Coordinates: | 45.0667°N 34°W |
| Region: | Lombardy |
| Province: | Cremona (CR) |
| Mayor: | Pierromeo Vaccari |
| Area Total Km2: | 10.8 |
| Population Footnotes: | [1] |
| Population Total: | 593 |
| Population As Of: | 31 July 2014 |
| Population Demonym: | Casteldidonesi |
| Elevation M: | 27 |
| Postal Code: | 26030 |
| Area Code: | 0375 |
Casteldidone (Cremunés: Casteldidòon) is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 110km (70miles) southeast of Milan and about 30km (20miles) east of Cremona.
Casteldidone borders the following municipalities: Casalmaggiore, Martignana di Po, Piadena, Rivarolo del Re ed Uniti, Rivarolo Mantovano, San Giovanni in Croce.