Chrzanówek [xʂaˈnuvɛk] is a village in the administrative district of Gmina Opinogóra Górna, within Ciechanów County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Opinogóra Górna, 3 km (2 mi) north-east of Ciechanów, and 77 km (48 mi) north of Warsaw.