Khayyr (Russian: Хайыр; Yakut: Хайыр) is a rural locality (a selo), the only inhabited locality, and the administrative center of Omoloysky National Rural Okrug of Ust-Yansky District in the Sakha Republic, Russia, located 498 kilometers (309 mi) from Deputatsky, the administrative center of the district. Its population as of the 2010 Census was 433, of whom 223 were male and 210 female, down from 441 recorded during the 2002 Census.