XI Corps

11 Corps, 11th Corps, Eleventh Corps, or XI Corps may refer to:


 * 11th Army Corps (France)
 * XI Corps (Grande Armée), a unit of the Imperial French Army during the Napoleonic Wars
 * XI Corps (German Empire), a unit of the Imperial German Army
 * XI Army Corps (Wehrmacht), a unit of the Nazi German Army
 * XI Corps (India)
 * XI Army Corps (Italy)
 * XI Corps (Ottoman Empire)
 * 11th Army Corps (Russian Empire)
 * 11th Army Corps (Russian Federation)
 * XI Corps (Pakistan), a unit of the Pakistani Army
 * XI Army Corps (Spain)
 * XI Corps (United Kingdom), a unit of the British Army
 * XI Corps (United States), a unit of the United States Army
 * XI Corps (Union Army), a unit in the American Civil War