The Besed or Biesiedź (Belarusian: Беседзь; Russian: Беседь) is a river of Belarus (Mogilev Region and Gomel Region) and Russia (Smolensk Oblast and Bryansk Oblast). It is a left-bank tributary of the Sozh River in the Dnieper basin. The Besed is 261 kilometres (162 mi) long, and has a drainage basin of 5,600 square kilometres (2,200 sq mi).