| Rionero Sannitico | |
| Official Name: | Comune di Rionero Sannitico |
| Coordinates: | 41.7167°N 22°W |
| Region: | Molise |
| Province: | Isernia (IS) |
| Frazioni: | Casabona, Castiglione, Collefava, Le Canala, Le Martine, Le Vigne, Montalto, Predalve, San Mariano, Vernali |
| Mayor: | Palmerino D'Amico |
| Area Total Km2: | 29.0 |
| Population Footnotes: | [1] |
| Population Total: | 1179 |
| Population As Of: | Dec. 2004 |
| Postal Code: | 86087 |
| Area Code: | 0865 |
Rionero Sannitico is a comune (municipality) in the Province of Isernia in the Italian region Molise, located about 45km (28miles) northwest of Campobasso and about 15km (09miles) northwest of Isernia.