Vilyuysk (Russian: Вилюйск, IPA: [vʲɪˈlʲʉjsk]; Yakut: Бүлүү, Bülüü) is a town and the administrative center of Vilyuysky District in the Sakha Republic, Russia, located on the Vilyuy River (left tributary of the Lena), about 600 kilometers (370 mi) from Yakutsk, the capital of the republic.

[citation needed] Members of the peasant rebellion led by Yemelyan Pugachev were exiled to the area in the 1770s, building the new town of Olensk in 1783.

[citation needed] Kate Marsden visited in 1891 on her mission to treat lepers in the region,[8] and returned in 1897 to establish a hospital.

[1] As an administrative division, it is, together with one rural locality (the selo of Sosnovka), incorporated within Vilyuysky District as the Town of Vilyuysk.

Summer temperatures are actually quite high for its attitude due to its long distance from the moderating influence of the oceans.