Wólka Gostomska [ˈvulka ɡɔsˈtɔmska] is a village in the administrative district of Gmina Mogielnica, within Grójec County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) south-west of Mogielnica, 29 km (18 mi) south-west of Grójec, and 68 km (42 mi) south of Warsaw.