Półwiosek Lubstowski ([puu̯ˈvjɔsɛk lupsˈtɔfski]) is a village in the administrative district of Gmina Ślesin, within Konin County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 3 kilometres (2 mi) east of Ślesin, 18 km (11 mi) north of Konin, and 97 km (60 mi) east of the regional capital Poznań.