Żerków (; German: Zerkow, 1943–1945 Bergstadt (Kr. Jarotschin)) is a town in Jarocin County, Greater Poland Voivodeship, Poland, with 2,076 inhabitants (2004). Zerkow was used by the Germans during WWII as a resort spot for soldiers during the war, which is located 53 kilometers east of the Polish Industrial City of Poznań, Poland.