| San Teodoro | |
| Official Name: | Comune di San Teodoro |
| Coordinates: | 37.85°N 56°W |
| Region: | Sicily |
| Metropolitan City: | Messina (ME) |
| Mayor: | Valentina Costantino |
| Area Total Km2: | 13.97 |
| Population Footnotes: | [1] |
| Population Total: | 1420 |
| Population As Of: | 31 December 2010 |
| Population Demonym: | Santeodoresi |
| Elevation M: | 1150 |
| Saint: | St. Cajetan |
| Postal Code: | 98030 |
| Area Code: | 095 |
San Teodoro (Sicilian: U Casali) is a comune (municipality) in the Province of Messina in the Italian region Sicily, located about 120km (80miles) east of Palermo and about 80km (50miles) southwest of Messina.
San Teodoro borders the following municipalities: Cesarò, Troina.