| Castel Sant'Angelo | |
| Official Name: | Comune di Castel Sant'Angelo |
| Coordinates: | 42.4°N 14°W |
| Region: | Lazio |
| Province: | Rieti (RI) |
| Mayor: | Paolo Anibaldi |
| Area Total Km2: | 31.3 |
| Population Total: | 1237 |
| Population As Of: | 30 April 2008 |
| Population Demonym: | Castellani |
| Elevation M: | 448 |
| Postal Code: | 02010 |
| Area Code: | 0746 |
Castel Sant'Angelo is a Italian: [[comune]] (municipality) in the Province of Rieti in the Italian region of Lazio, located about 70km (40miles) northeast of Rome and about 12km (07miles) east of Rieti.
Castel Sant'Angelo borders the following municipalities: Borgo Velino, Cittaducale, Micigliano, Rieti.
The Lake of Cutilia is located in the frazione of Vasche.
Castel Sant'Angelo has a station on the Terni–Sulmona railway, with trains to Terni, Rieti and L'Aquila.