23 Corps, 23rd Corps, Twenty Third Corps, or XXIII Corps may refer to:
XXIII Reserve Corps (German Empire), a unit of the Imperial German Army during World War I XXIII Corps (United States) XXIII Corps (United Kingdom) XXIII Corps (Union Army), a unit in the American Civil War
See also List of military corps by number 23rd Battalion (disambiguation) 23rd Brigade (disambiguation) 23rd Division (disambiguation) 23 Squadron (disambiguation)