| Castel Rocchero | |
| Official Name: | Comune di Castel Rocchero |
| Coordinates: | 44.7167°N 33°W |
| Region: | Piedmont |
| Province: | Asti (AT) |
| Mayor: | Luigi Iuppa |
| Area Total Km2: | 5.6 |
| Population Total: | 402 |
| Population As Of: | 1 January 2010[1] |
| Population Demonym: | Castelrocchesi |
| Elevation M: | 414 |
| Postal Code: | 14040 |
| Area Code: | 0141 |
Castel Rocchero is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about 70km (40miles) southeast of Turin and about 25km (16miles) southeast of Asti.
Castel Rocchero borders the following municipalities: Acqui Terme, Alice Bel Colle, Castel Boglione, Castelletto Molina, Fontanile, and Montabone.