Grodziec [ˈɡrɔd͡ʑɛt͡s] is a village in the administrative district of Gmina Czerwińsk nad Wisłą, within Płońsk County, Masovian Voivodeship, in east-central Poland. It lies approximately 11 kilometres (7 mi) north-east of Czerwińsk nad Wisłą, 19 km (12 mi) south of Płońsk, and 51 km (32 mi) north-west of Warsaw.