Łoźnik [ˈwɔʑnik] is a village in the administrative district of Gmina Pieniężno, within Braniewo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) north-east of Pieniężno, 29 km (18 mi) south-east of Braniewo, and 55 km (34 mi) north of the regional capital Olsztyn.