Marianów [maˈrjanuf] is a village in the administrative district of Gmina Iwaniska, within Opatów County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Iwaniska, 19 km (12 mi) south-west of Opatów, and 48 km (30 mi) south-east of the regional capital Kielce.