| Sordo | |
| Mouth: | Corno |
| Mouth Location: | Serravalle di Norcia |
| Mouth Coordinates: | 42.7855°N 13.0203°W |
| Progression: | Corno→ |
| Subdivision Type1: | Country |
| Subdivision Name1: | Italy |
The Sordo is a small river in eastern Umbria in Italy. Its source is about 1 km south of Norcia at an approximate altitude of 600 m (1950 ft), and it flows for about 7km (04miles) west to Serravalle where it empties into the Corno.