Niecieplin [ɲɛˈt͡ɕɛplin] is a village in the administrative district of Gmina Garwolin, within Garwolin County, Masovian Voivodeship, in east-central Poland. It lies approximately 2 kilometres (1 mi) north-east of Garwolin and 57 km (35 mi) south-east of Warsaw.