Siegfried von Forstner
| Siegfried von Forstner | |
|---|---|
| Born | 19 September 1910 Hannover | 
| Died | 13 October 1943 (aged 33) Atlantic Ocean † | 
| Allegiance | Weimar Republic (to 1933) Nazi Germany | 
| Branch | Reichsmarine Kriegsmarine | 
| Years of service | 1930–43 | 
| Rank | Korvettenkapitän posthumously promoted to Fregattenkapitän | 
| Unit | SSS Niobe cruiser Emden survey vessel Meteor battleship Hessen cruiser Admiral Scheer cruiser Nürnberg Panzerschiff Deutschland U-99 | 
| Commands | U-402 | 
| Battles / wars | World War II | 
| Awards | Knight's Cross of the Iron Cross | 
Korvettenkapitän Siegfried Freiherr von Forstner[a] (19 September 1910 – 13 October 1943[b]) was a German U-boat commander during World War II. He was also a recipient of the Knight's Cross of the Iron Cross. He and his entire crew of U-402 were killed in action on 13 October 1943.