Ayon (Russian: Айон) is a rural locality (a selo) in Chaunsky District of Chukotka Autonomous Okrug, Russia, situated on the northwestern shores of Ayon Island in the entrance to Chaunskaya Bay. It is the only populated place on the island. Population: 252 (2010 Census); Municipally, Ayon is subordinated to Chaunsky Municipal District and is incorporated as Ayon Rural Settlement.