Ostrówek [ɔsˈtruvɛk] is a village in Wieluń County, Łódź Voivodeship, in central Poland. It is the seat of the gmina (administrative district) called Gmina Ostrówek. It lies approximately 14 kilometres (9 mi) north of Wieluń and 77 km (48 mi) south-west of the regional capital Łódź.