Lubień (Polish pronunciation: [ˈlubjɛj̃]) is a village in the administrative district of Gmina Ośno Lubuskie, within Słubice County, Lubusz Voivodeship, in western Poland.

It lies approximately 9 kilometres (6 mi) south-east of Ośno Lubuskie, 30 km (19 mi) east of Słubice, 40 km (25 mi) south-west of Gorzów Wielkopolski, and 64 km (40 mi) north-west of Zielona Góra.