Nizhneyansk (Russian: Нижнея́нск; Yakut: Нижнеянскай, romanized: Nijneyanskay) is an urban locality (an urban-type settlement) in Ust-Yansky District of the Sakha Republic, Russia, located 602 kilometers (374 mi) from Deputatsky, the administrative center of the district,[2] in the Yana River delta.

As of the 2010 Census, its population was 391.

[3] It was founded in the 1940s[citation needed] and was granted urban-type settlement status in 1958.

[2] Within the framework of administrative divisions, the urban-type settlement of Nizhneyansk[1] is incorporated within Ust-Yansky District as the Settlement of Nizhneyansk.

[2] As a municipal division, the Settlement of Nizhneyansk is incorporated within Ust-Yansky Municipal District as Nizhneyansk Urban Settlement.