Kotnowo [kɔtˈnɔvɔ] is a village in the administrative district of Gmina Płużnica, within Wąbrzeźno County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 4 kilometres (2 mi) north of Płużnica, 13 km (8 mi) north-west of Wąbrzeźno, and 36 km (22 mi) north of Toruń.