German submarine U-717

German submarine U-717 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 24 April 1942 at the H. C. Stülcken Sohn yard at Hamburg, launched on 20 February 1943, and commissioned on 19 May 1943 under the command of Oberleutnant zur See Siegfried von Rothkirch und Panthen.

Attached to 5th U-boat Flotilla based at Kiel, U-717 completed her training period on 31 July 1944 and was assigned to front-line service.

Service history
In the last days of World War II, U-717 was scuttled with other U-boats during Operation Rainbow in Flensburg Firth on 5 May 1945 in position 54.81667°N, 9.45°W.