Usun-Kyuyol (; , Uhun Küöl) is a rural locality (a selo), the only inhabited locality, and the administrative center of Arylakhsky Rural Okrug of Verkhnekolymsky District in the Sakha Republic, Russia, located from Zyryanka, the administrative center of the district. Its population as of the 2010 Census was 499, of whom 254 were male and 245 female, down from 575 recorded during the 2002 Census.