Łomnica [wɔmˈnit͡sa]) is a village in the administrative district of Gmina Trzcianka, within Czarnków-Trzcianka County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 8 kilometres (5 mi) north-east of Trzcianka, 23 km (14 mi) north of Czarnków, and 82 km (51 mi) north of the regional capital Poznań.