Niszczyce-Pieńki [niʂˈt͡ʂɨt͡sɛ ˈpjɛɲki] is a village in the administrative district of Gmina Bielsk, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Bielsk, 12 km (7 mi) north-east of Płock, and 96 km (60 mi) north-west of Warsaw.