The Police Battalion 320 (Polizeibattalion 320) was a formation of the German Order Police (uniformed police) during the Nazi era. During Operation Barbarossa, it was subordinated to the SS and deployed in German-occupied areas, specifically the Army Group South Rear Area, of the Soviet Union, as part of Police Regiment Special Purpose (later the 11th SS Police Regiment). Alongside detachments from the Einsatzgruppen of the SD, it perpetrated mass murder in the Holocaust and was responsible for large-scale crimes against humanity targeting civilian populations.