恰恩库夫（Czarnków）是位于波兰大波兰省的城市。人口约有12,000人。城市附近多山。在1975年至1998年期间，属皮拉省。首次被提及是在12世纪。在1108年被波兰征服。

Czarnków [ˈt͡ʂarŋkuf] (German: until 1940: Czarnikau, between 1940-1945: Scharnikau) is a town in Poland in Czarnków-Trzcianka County in Greater Poland Voivodeship, previously in Piła Voivodeship (1975-1998). It has 12,000 inhabitants.

The town lies on the Noteć river. Because there are many hills around the town, the area is called Szwajcaria Czarnkowska ("Czarnków's Switzerland").