Gumnisko [ɡumˈniskɔ] is a village in the administrative district of Gmina Kiełczygłów, within Pajęczno County, Łódź Voivodeship, in central Poland. It lies approximately 2 kilometres (1 mi) south-west of Kiełczygłów, 10 km (6 mi) north of Pajęczno, and 71 km (44 mi) south-west of the regional capital Łódź.