Zalesie [zaˈlɛɕɛ] is a village in the administrative district of Gmina Mały Płock, within Kolno County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 4 kilometres (2 mi) north of Mały Płock, 11 km (7 mi) south-east of Kolno, and 81 km (50 mi) west of the regional capital Białystok.