Antoniów [anˈtɔɲuf] is a village in the administrative district of Gmina Bałtów within Ostrowiec County, Świętokrzyskie Voivodeship in south-central Poland. It lies approximately 5 kilometres (3 mi) north of Bałtów, 17 km (11 mi) north-east of Ostrowiec Świętokrzyski, and 67 km (42 mi) east of the regional capital Kielce.