Blücher was a wolfpack of German U-boats that operated during the World War II Battle of the Atlantic from 13 July to 1 August 1942. They attacked the Freetown, Sierra Leone to Liverpool convoys SL-118 and SL-119, and sank six ships for a total of , and damaged one (). The group was named after Gebhard Leberecht von Blücher (1742–1819), a Prussian Generalfeldmarschall in the Napoleonic Wars.