German submarine U-2338 was a Type XXIII U-boat of Nazi Germany's Kriegsmarine during World War II. She was ordered on 20 September 1943, and was laid down on 10 August 1944 at Deutsche Werft AG, Hamburg, as yard number 492. She was launched on 18 September 1944 and commissioned under the command of Oberleutnant zur See Hans-Dietrich Kaiser on 9 October 1944.