Osówko is a village in the administrative district of Gmina Biskupiec, within Nowe Miasto County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) west of Biskupiec, 25 km (16 mi) west of Nowe Miasto Lubawskie, and 90 km (56 mi) west of the regional capital Olsztyn. The village has a population of 160. Gmina Biskupiec is a rural gmina (administrative district) in Nowe Miasto County, Warmian-Masurian Voivodeship, in northern Poland. Its seat is the village of Biskupiec, which lies approximately 19 kilometres (12 mi) north-west of Nowe Miasto Lubawskie and 83 km (52 mi) south-west of the regional capital Olsztyn.