Załęcze Wielkie is a village in the administrative district of Gmina Pątnów, within Wieluń County, Łódź Voivodeship, in central Poland. It lies approximately 9 km south-east of Pątnów, 18 km south-east of Wieluń, and 95 km south-west of the regional capital Łódź. Jurassic (Oxfordian) outcrops in abandoned quarries located near the village yielded fossils of a thalattosuchian crocodylomorph belonging to the superfamily Teleosauroidea.