SM U-82 was a Type U 81 U-boat of the Imperial German Navy during World War I. She was launched on 1 July 1916 and commissioned on 16 September 1916 under Hans Adam. She was assigned to IV Flotilla on 21 November 1916, serving with them throughout the war. She carried out 11 patrols during the war, commanded from 30 Apr 1918 by Heinrich Middendorf. SM U-82 sank 36 ships for a total of 110,160 tons, and damaging a further three ships for 32,914 tons. Among the ships she damaged was the USS Mount Vernon, the former SS Kronprinzessin Cecilie. At 18,372 tons she was one of the largest ships to be hit by a U-boat during the war.