German submarine U-263 was a Type VIIC U-boat of the Nazi German Kriegsmarine during World War II. The submarine was laid down on 8 June 1941 at the Bremer-Vulkan-Vegesacker Werft (yard) in Bremen as 'werk' 28. She was launched on 18 March 1942 and commissioned on 6 May under the command of Kapitänleutnant Kurt Nölke. In two patrols, she sank two ships of 12,376 GRT. She was a member of one wolf pack. She was sunk in January 1944 in the Bay of Biscay, during a deep dive trial.