Kolsko [ˈkɔlskɔ] is a village in Nowa Sól County, Lubusz Voivodeship, in western Poland. It is the seat of the gmina (administrative district) called Gmina Kolsko. It lies approximately 24 kilometres (15 mi) north-east of Nowa Sól and 31 km (19 mi) east of Zielona Góra.