Supienie is a village in the administrative district of Gmina Filipów, within Suwałki County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 6 km north-west of Filipów, 29 km north-west of Suwałki, and 129 km north of the regional capital Białystok. Accommodations in Supienie range from hotels to pensions, holiday resorts, and private apartments. The postal code for Supienie is 16-424.