Michałki Nidzica County
 Michałki [miˈxau̯ki] (German: Michalken; 1938-45: Michelsau) 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.The village has a population of 140.