Wola Ostaszewska [ˈvɔla ɔstaˈʂɛfska] is a village in the administrative district of Gmina Sońsk, within Ciechanów County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) east of Sońsk, 17 km (11 mi) south-east of Ciechanów, and 63 km (39 mi) north of Warsaw.