Kwasów [ˈkfasuf] is a village in the administrative district of Gmina Pacanów, within Busko County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 3 kilometres (2 mi) north-west of Pacanów, 23 km (14 mi) east of Busko-Zdrój, and 59 km (37 mi) south-east of the regional capital Kielce.