Kościeszki [kɔɕˈt͡ɕɛʂki] is a village in the administrative district of Gmina Jeziora Wielkie, within Mogilno County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 6 kilometres (4 mi) north-east of Jeziora Wielkie, 27 km (17 mi) east of Mogilno, and 56 km (35 mi) south of Toruń.