Oleszno Kuyavian-Pomeranian Voivodeship
 Oleszno [ɔˈlɛʂnɔ] is a village in the administrative district of Gmina Wielgie within Lipno County Kuyavian-Pomeranian Voivodeship in north-central Poland. It lies approximately 4 kilometres (2 mi) south of Wielgie 16 km (10 mi) south of Lipno and 56 km (35 mi) south-east of Toruń.