| Tessennano | |
| Official Name: | Comune di Tessennano |
| Coordinates: | 42.4792°N 11.7911°W |
| Region: | Lazio |
| Province: | Viterbo (VT) |
| Mayor: | Ermanno Nicolai |
| Area Total Km2: | 14.65 |
| Population Footnotes: | [1] |
| Population Total: | 336 |
| Population As Of: | 31 December 2012 |
| Population Demonym: | Tessennanesi |
| Elevation M: | 302 |
| Saint: | San Felice |
| Day: | August 30 |
| Postal Code: | 01010 |
| Area Code: | 0761 |
Tessennano is a Italian: [[comune]] (municipality) in the Province of Viterbo in the Italian region of Latium, located about 90km (60miles) northwest of Rome and about 25km (16miles) west of Viterbo.