Kołatnik [kɔˈwatnik] (German: Schloßmühl) is a village in the administrative district of Gmina Wałcz, within Wałcz County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 4 kilometres (2 mi) north of Wałcz and 127 km (79 mi) east of the regional capital Szczecin.