Tomtor is a rural locality, the administrative centre of, and one of four settlements in addition to Aeroport, Agayakan and Kuydusun in Borogonsky Second Rural Okrug of Oymyakonsky District in the Sakha Republic, Russia. It is located 570 kilometers (350 mi) from Ust-Nera, the administrative center of the district. Its population as of the 2002 census was 1,256.