Kretowiny [krɛtɔˈvinɨ] (German Kranthau) is a village in the administrative district of Gmina Morąg, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) south-east of Morąg, 21 km (13 mi) north of Ostróda, and 34 km (21 mi) west of the regional capital Olsztyn.