Wielenin [vjɛˈlɛnin] is a village in the administrative district of Gmina Uniejów, within Poddębice County, Łódź Voivodeship, in central Poland. It lies approximately 7 kilometres (4 mi) north-east of Uniejów, 16 km (10 mi) north-west of Poddębice, and 50 km (31 mi) north-west of the regional capital Łódź.