Średnica [ɕrɛdˈnit͡sa] is a village in the administrative district of Gmina Czarnków, within Czarnków-Trzcianka County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 16 kilometres (10 mi) west of Czarnków and 71 km (44 mi) north-west of the regional capital Poznań.