| Castelvittorio | |
| Official Name: | Comune di Castelvittorio |
| Coordinates: | 43.9167°N 47°W |
| Region: | Liguria |
| Province: | Imperia (IM) |
| Mayor: | Gian Stefano Orengo |
| Area Total Km2: | 25.8 |
| Population Total: | 355 |
| Population As Of: | 31 December 2008[1] |
| Population Demonym: | Castellesi |
| Elevation M: | 420 |
| Saint: | St. Stephen |
| Day: | 26 December |
| Postal Code: | 18037 |
| Area Code: | 0184 |
Castelvittorio (Caste, locally U Casté) is a comune (municipality) in the Province of Imperia in the Italian region Liguria, located about 120km (80miles) southwest of Genoa and about 30km (20miles) west of Imperia.
Castelvittorio borders the following municipalities: Apricale, Bajardo, Isolabona, Molini di Triora, Pigna and Triora.
The parish church of St. Stephen houses 16th or 17th century bas-relief, a Crucifixion of Jesus by Marcello Venusti (late 16th century) and a crucifix by Anton Maria Maragliano.