Michałki (Polish: [miˈxawkʲi]) is a village in the administrative district of Gmina Kozłowo, within Nidzica County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 15 kilometres (9 mi) north of Kozłowo, 12 km (7 mi) north-west of Nidzica, and 42 km (26 mi) south of the regional capital Olsztyn.