German submarine U-757 was a Type VIIC U-boat built for the German Kriegsmarine for service during World War II. Launched from Werk 140at the Kriegsmarinewerft (KMW) in Wilhelmshaven Lower Saxony (Then, the Free State of Oldenburg), U-757 served with 6th U-boat Flotilla from February 28, 1942 to January 8, 1944 under the command of Korvetkapitän Friedrich Deetz.