Deputatsky (Russian: Депута́тский; Yakut: Депутатскай, romanized: Deputatskay) is an urban locality (an urban-type settlement) and the administrative center of Ust-Yansky District in the Sakha Republic, Russia, located in the Selennyakh Range, about 930 kilometers (580 mi) north-northeast of Yakutsk, the capital of the republic. As of the 2010 Census, its population was 2,983.