Rolnowo [rɔlˈnɔvɔ] (German Rollnau) is a village in the administrative district of Gmina Morąg, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) north-west of Morąg, 31 km (19 mi) north of Ostróda, and 48 km (30 mi) north-west of the regional capital Olsztyn.