Rosłonki is a settlement in the administrative district of Gmina Biały Bór, within Szczecinek County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 9 kilometres (6 mi) south of Biały Bór, 15 km (9 mi) north-east of Szczecinek, and 153 km (95 mi) east of the regional capital Szczecin.