Potoczyzna [pɔtɔˈt͡ʂɨzna] is a village in the administrative district of Gmina Mońki, within Mońki County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 3 kilometres (2 mi) north-east of Mońki and 41 km (25 mi) north-west of the regional capital Białystok.