Grzeszyn [ˈɡʐɛʂɨn] is a village in the administrative district of Gmina Buczek, within Łask County, Łódź Voivodeship, in central Poland. It lies approximately 7 kilometres (4 mi) north-east of Buczek, 11 km (7 mi) south-east of Łask, and 32 km (20 mi) south-west of the regional capital Łódź.