Bolejny is a village in the administrative district of Gmina Nidzica, within Nidzica County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 14 kilometres (9 mi) north of Nidzica and 34 km (21 mi) south of the regional capital Olsztyn. Until 1945 the village belonged to Germany and was named "Bolleinen".