Chernyshevsky (Russian: Черныше́вский; Yakut: Чернышевскай, romanized: Çernışevskay) is an urban locality (an urban-type settlement) in Mirninsky District of the Sakha Republic, Russia, located 92 kilometers (57 mi) from Mirny, the administrative center of the district,[2] on the southern edge of the Central Siberian Plateau on the Vilyuy River, a tributary of the Lena.

[3] It was founded in 1959 with the construction of the dam and hydroelectric plant on the Vilyuy River[citation needed] and granted urban-type settlement status in 1961.

After the hydroelectric project was completed in 1976, a large number of inhabitants moved away, with the population falling by almost a third between 1970 and 1979 but remaining fairly stable in the following years.

The plant has a capacity of 680 MW and supplies power for the diamond mining activities in the nearby Udachny and Mirny.

There is also some fish farming in the reservoir behind the Vilyuy Dam, as well as some timber production and a geological research organization.