German submarine U-2535 was a Type XXI U-boat (one of the "Elektroboote") of Nazi Germany's Kriegsmarine, built for service in World War II. She was ordered on 6 November 1943, and was laid down on 19 October 1944 at the Blohm & Voss yard at Hamburg, as yard number 2535. She was launched on 16 December 1944, and commissioned under the command of Kapitänleutnant Otto Bitter on 28 January 1945.