Kochanówka [kɔxaˈnufka] is a village in the administrative district of Gmina Sienno, within Lipsko County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) west of Sienno, 19 km (12 mi) south-west of Lipsko, and 129 km (80 mi) south of Warsaw.