| Longone Sabino | |
| Official Name: | Comune di Longone Sabino |
| Coordinates: | 42.2667°N 70°W |
| Region: | Lazio |
| Province: | Rieti (RI) |
| Frazioni: | Fassinoro, Roccaranieri, San Silvestro |
| Mayor: | Santino Pezzotti |
| Area Total Km2: | 34.33 |
| Population Footnotes: | [1] |
| Population Total: | 570 |
| Population As Of: | 31 March 2017 |
| Population Demonym: | Longonesi |
| Elevation M: | 804 |
| Postal Code: | 02020 |
| Area Code: | 0765 |
Longone Sabino is a Italian: [[comune]] (municipality) in the Province of Rieti in the Italian region of Latium, located about 60km (40miles) northeast of Rome and about 15km (09miles) southeast of Rieti.
The municipality borders with Ascrea, Belmonte in Sabina, Cittaducale, Concerviano, Petrella Salto, Rieti and Rocca Sinibalda. The municipal territory counts a northern exclave in which are located its hamlets (frazioni): Fassinoro, Roccaranieri and San Silvestro.