Kolno[ˈkɔlnɔ] is a town in northeastern Poland, located in the Podlaskie Voivodeship, about 150 km northeast of Warsaw. It is the seat of Kolno County, and the seat of the smaller administrative district (gmina) called Gmina Kolno, but it is not part of this district, as the town has gmina status in its own right. Kolno has 10,730 inhabitants (2007).