Lubasz [ˈlubaʂ]) is a village in Czarnków-Trzcianka County, Greater Poland Voivodeship, in west-central Poland. It is the seat of the gmina (administrative district) called Gmina Lubasz. It lies approximately 5 kilometres (3 mi) south-west of Czarnków and 59 km (37 mi) north-west of the regional capital Poznań.