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 west to Serravalle where it empties into the Corno and river Nera.
<!-- This is a pretty small river, with not that much more to say (if I knew it, I'd say it); pointless marking it "stub": WYSIWYG. -->