Wiśniewka [viɕˈɲɛfka] is a village in the administrative district of Gmina Sępólno Krajeńskie, within Sępólno County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 2 kilometres (1 mi) west of Sępólno Krajeńskie and 50 km (31 mi) north-west of Bydgoszcz.