Biernatowo [bjɛrnaˈtɔvɔ] is a village in the administrative district of Gmina Trzcianka, within Czarnków-Trzcianka County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 16 kilometres (10 mi) south-west of Trzcianka, 20 km (12 mi) west of Czarnków, and 75 km (47 mi) north-west of the regional capital Poznań.