Kozia Wólka [ˈkɔʑa ˈvulka] is a settlement in the administrative district of Gmina Małdyty, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) east of Małdyty, 26 km (16 mi) north of Ostróda, and 45 km (28 mi) west of the regional capital Olsztyn.