Piątek Wielki (Polish pronunciation: [ˈpjɔntɛk ˈfjɛlkʲi]) is a village in the administrative district of Gmina Stawiszyn, within Kalisz County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 3 kilometres (2 mi) south-west of Stawiszyn, 16 km (10 mi) north of Kalisz, and 98 km (61 mi) south-east of the regional capital Poznań.