Osiekowo [ɔɕɛˈkɔvɔ] is a village in the administrative district of Gmina Dąbrówno, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 30 kilometres (19 mi) south of Ostróda and 45 km (28 mi) south-west of the regional capital Olsztyn.