The Sudost River is a river in Bryansk Oblast in Russia and Chernihiv Oblast in Ukraine. It is a right tributary of the Desna River. The length of the Sudost River is 208 km. The area of its basin is approx. 5,850 km². The river freezes up in November - December, and stays icebound until late March - early April.
Towns located on the river: Pochep