The Vyazma (Russian: Вязьма) is a river in Smolensk Oblast, Russia. It is a left tributary of the Dnieper. The length of the river is 147 kilometres (91 mi). The area of its basin is 1,350 square kilometres (520 sq mi).^[1] In ancient times, the Vyazma River was a part of a route that connected the upper basins of the Volga, Oka, and Dnieper with the help of portages. The city of Vyazma is located on the Vyazma River.