Grudzianka [ɡruˈd͡ʑanka] is a village in the administrative district of Gmina Lwówek, within Nowy Tomyśl County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 10 kilometres (6 mi) west of Lwówek, 14 km (9 mi) north-west of Nowy Tomyśl, and 59 km (37 mi) west of the regional capital Poznań.