The Italian XXIII Army Corps () was a formation of the Italian army in World War II.
There was a XXIII Corps in World War I, formed in Padua, which existed between 10 April 1917 and 15 July 1919.
The Corps was reformed in Al-Khums in Libya on 15 October 1939 and participated in the Italian Invasion of Egypt.<br> Like the rest of the Italian 10th Army, it had to retreat and took up defensive positions in the major Italian fortification of Bardia.<br> During the Battle of Bardia, the town was overrun by the 6th Australian Division, and despite its numerical superiority, the entire XXIII Corps was taken prisoner on 5 January 1941 and disbanded.
On 15 June 1942, a new XXIII Corps was formed in Trieste to defend the coast and the Trieste. On 10 September 1943, the Corps was disarmed by the Germans and disbanded.