Tarnówko [tarˈnufkɔ] is a village in the administrative district of Gmina Połajewo, within Czarnków-Trzcianka County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 10 kilometres (6 mi) west of Połajewo, 14 km (9 mi) south of Czarnków, and 48 km (30 mi) north-west of the regional capital Poznań.