Chechnówka [xɛxˈnufka] is a village in the administrative district of Gmina Nasielsk, within Nowy Dwór County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) south-east of Nasielsk, 18 km (11 mi) north-east of Nowy Dwór Mazowiecki, and 39 km (24 mi) north of Warsaw.