Prośno [ˈprɔɕnɔ] is a village in the administrative district of Gmina Morąg, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 11 kilometres (7 mi) south of Morąg, 14 km (9 mi) north of Ostróda, and 38 km (24 mi) west of the regional capital Olsztyn.