German submarine U-407 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine during World War II. She was laid down on 12 September 1940 by Danziger Werft, Danzig as yard number 108, launched on 16 August 1941 and commissioned on 18 December 1941 under Oberleutnant zur See Ernst-Ulrich Brüller.

RMS Viceroy of India was an ocean liner of the Peninsular and Oriental Steam Navigation Company (P&O). She was a British Royal Mail Ship on the Tilbury–Bombay route and was named after the Viceroy of India. In World War II, she was converted to and used as a troopship. She was sunk in the Mediterranean in November 1942 by German submarine U-407.