| San Venanzo | |
| Official Name: | Comune di San Venanzo |
| Coordinates: | 42.8667°N 28°W |
| Region: | Umbria |
| Province: | Terni (TR) |
| Frazioni: | Ospedaletto, San Marino, Pornello, San Vito, Poggio Aquilone, Civitella dei Conti, Collelungo, Rotecastello, Ripalvella |
| Mayor: | Marsilio Marinelli |
| Area Total Km2: | 169.45 |
| Population Footnotes: | [1] |
| Population Total: | 2186 |
| Population As Of: | 30 June 2017 |
| Population Demonym: | Sanvenanzesi |
| Elevation M: | 465 |
| Postal Code: | 05010 |
| Area Code: | 075 |
San Venanzo is a comune (municipality) in the Province of Terni in the Italian region Umbria, located about 30km (20miles) southwest of Perugia and about 45km (28miles) northwest of Terni.
San Venanzo borders the following municipalities: Ficulle, Fratta Todina, Marsciano, Monte Castello di Vibio, Montegabbione, Orvieto, Parrano, Piegaro, Todi.