Kotuń [ˈkɔtuɲ] (German: Kattun) is a village in the administrative district of Gmina Szydłowo, within Piła County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Szydłowo, 7 km (4 mi) south-west of Piła, and 83 km (52 mi) north of the regional capital Poznań.