Wilków Pierwszy [ˈvilkuf ˈpjɛrfʂɨ] is a village of the administrative district of Gmina Błędów, within Grójec County, Masovian Voivodeship, in east-central Poland. It lies approximately 19 kilometres (12 mi) south-west of Grójec and 53 km (33 mi) south-west of Warsaw.