Agayakan (; , Agayakaan) is an abandoned village, which used to be a rural locality (a selo). It was one of four settlements in Second Borogonsky Rural Okrug of Oymyakonsky District in the Sakha Republic, Russia, in addition to Tomtor, the administrative center of the Rural Okrug, Aeroport and Kuydusun. Its population as of the 2002 Census was 0.
Agayakan is located from Ust-Nera, the administrative center of the district and from Tomtor. The deserted village is located close to the confluence of the Agayakan and Suntar rivers, which form the Kyuyente, a tributary of the Indigirka. The minimum temperature of âÂÂ57.0 ðC (âÂÂ70.6 ðF) was recorded on December 5, 2023, in Agayakan.