USS Hammann (DD-412) was a World War II-era Sims-class destroyer in the service of the United States Navy, named after Ensign Charles Hammann, a Medal of Honor recipient from World War I. Hammann was sunk during the Battle of Midway, trying to assist the sinking aircraft carrier USS Yorktown. Hammann was launched by the Federal Shipbuilding and Drydock Company, Kearny, New Jersey on 4 February 1939; sponsored by Miss Lillian Hammann; and commissioned on 11 August 1939, Commander Arnold E. True in command. Hammann conducted shakedown off the East Coast and for the next two years participated in training and readiness operations off both coasts.