Sułków [ˈsuu̯kuf] is a village in the administrative district of Gmina Krasocin, within Włoszczowa County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 3 kilometres (2 mi) west of Krasocin, 9 km (6 mi) east of Włoszczowa, and 38 km (24 mi) west of the regional capital Kielce.