Podostrówek [pɔdɔsˈtruvɛk] is a village in the administrative district of Gmina Suchowola, within Sokółka County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 7 kilometres (4 mi) north of Suchowola, 37 km (23 mi) north-west of Sokółka, and 58 km (36 mi) north of the regional capital Białystok.