XXVII Corps

27 Corps, 27th Corps, Twenty Seventh Corps, or XXVII Corps may refer to:


 * XXVII Reserve Corps (German Empire), a unit during World War I
 * XXVII Army Corps (Wehrmacht), a German unit during World War II
 * 27th Army Corps (Russian Empire), a Russian unit during World War I
 * 27th Mechanized Corps (Soviet Union), a Soviet unit during World War II
 * 27th Air Defense Corps, a Soviet Cold War era unit