Ounastunturi is a fell in Finland. It is situated in the sub-region Tunturi Lapland of the Lapland region, in the north of the country, about north of the capital Helsinki. It lies in the northern part of the Pallas-Yllästunturi National Park. The Pallas-Ounastunturi National Park, established in 1938 and included in the former in 2005, was partly named after the fell. Ounastunturi is separated from the neighbouring Pallastunturi fell in the south by the Hannukuru valley.