Vasilsursk (Russian: Васильсу́рск) is an urban locality (a work settlement) in Vorotynsky District of Nizhny Novgorod Oblast, Russia, located on the Sura River, not far from its fall into the Volga. Population: 1,068 (2010 Census); 1,329 (2002 Census); 1,871 (1989 Census).
A Kuruk-Mari wooden fortress named Tsepel used to stand where Vasilsursk is now located. Russians captured it after bloody fight in 1523 from Kuruk Maris and established on its site a small settlement. The fort here was used as an advanced base during the Russo-Kazan Wars.