Stabieńszczyzna, is a village in the administrative district of Gmina Krasnopol, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 6 kilometres (4 mi) east of Krasnopol, 6 km (4 mi) west of Sejny, and 114 km (71 mi) north of the regional capital Białystok.