Kruplin Radomszczański [ˈkruplin radɔmʂˈt͡ʂaɲski] is a village in the administrative district of Gmina Nowa Brzeźnica, within Pajęczno County, Łódź Voivodeship, in central Poland. It lies approximately 3 kilometres (2 mi) east of Nowa Brzeźnica, 18 km (11 mi) south-east of Pajęczno, and 81 km (50 mi) south of the regional capital Łódź.