Lieutenant (later rear admiral) Kenneth Russell Unger was an American World War I flying ace credited with fourteen aerial victories.

His candidacy rejected by his own nation, Unger applied to the British Royal Flying Corps for military pilot training in June 1917.

As the RNAS was merged into the Royal Air Force, Unger scored his aerial victories between 26 June and 1 November 1918.

Nevertheless, the United States Air Service rejected him for enlistment, so he went to Canada to join the Royal Flying Corps in June 1917.

[5] Postwar, Unger became a U. S. Air Mail pilot, flying the Oakland to Salt Lake City route.