Z31 was a German Type 1936A (Mob) destroyer, which was completed in 1942 and served with the Kriegsmarine during the Second World War. She was constructed in Germany as part of Plan Z and commissioned 11 April 1942. She spent much of the war in Arctic and Norwegian waters, taking part in the Battle of the Barents Sea on 31 December 1942. She survived the war and was passed on to the French Navy as a war prize, serving under the name Marceau until 1958.