German submarine U-111 was a Type IXB U-boat of Nazi Germany's Kriegsmarine during World War II. She had a short career, sinking four enemy vessels and damaging one other. These victories took place over a period of two war patrols. During her first sortie, the boat sank two enemy vessels and damaged a further one. On her second patrol, U-111 sank two more enemy ships before she herself was sunk on 4 October 1941 southwest of Tenerife, by depth charges from a British warship. Out of a crew of 52 officers and men, eight died in the attack; 44 survived.