Święcieniec (Polish pronunciation: [ɕfjɛɲˈt͡ɕɛɲɛt͡s]) is a village in the administrative district of Gmina Słupno, within Płock County, Masovian Voivodeship, in east-central Poland. It lies approximately 15 kilometres (9 mi) east of Płock and 82 km (51 mi) north-west of Warsaw.