Antoniówka [antɔˈɲufka] is a village in the administrative district of Gmina Jedlnia-Letnisko, within Radom County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) west of Jedlnia-Letnisko, 10 km (6 mi) north-east of Radom, and 90 km (56 mi) south of Warsaw.