|Born||28 July 1879|
Turin, Kingdom of Italy
|Died||19 November 1958 (aged 79)|
|Allegiance||Kingdom of Italy|
|Service/||Royal Italian Army|
|Years of service||1896–1944|
|Commands held||Second Army|
World War I
World War II
|Relations||Ante Nikšić (father-in-law)|
|Other work||Inspector-General of the Army|
Vittorio Ambrosio (28 July 1879 – 19 November 1958) was an Italian general who served in the Italo-Turkish War, World War I, and World War II. During the last phase of World War II Ambrosio supported the fall of Benito Mussolini and Italy’s eventual renunciation of the German alliance.
Before World War II
Ambrosio was a native of Turin. In 1896 he entered the Military School of Modena; on completion of his schooling he was commissioned as a cavalry officer. During the Italo-Turkish War (1911-1912) he served as a tenente (first lieutenant) in the Cavaleggeri di Lucca regiment. Ambrosio served as a divisional chief of staff during World War I. In 1935 he was appointed Commander, XII Army Corps. By 1939 he had risen to command the Second Army, located on the Yugoslav border.
World War II
Ambrosio's early actions in World War II included leading the Italian offensive in Yugoslavia in 1941. After brief but heavy fighting his "II Armata" attacked from the north reaching Ljubjana and the outskirsts of Zadar by April 11th. On April 15th Ambrosio conquered Split and Kotor. By April 17th Ambrosio controlled the Dalmatian coast. Mussolini rewarded his success by appointing Ambrosio Chief of Staff of the Italian Army in February, 1943.
As Chief of Staff, Ambrosio planned to return Italian troops from Ukraine and the Balkans. In May 1943, after a devastating loss at Tunis and the Allied invasion of Sicily, Ambrosio attempted to convince Mussolini to pull Italy out of the war and end the alliance with Germany.  When Mussolini became unable to stand against Adolf Hitler, Ambrosio supported his removal from power. After Mussolini’s fall in July, Ambrosio replaced Ugo Cavallero as Chief, Comando Supremo (Supreme Command of the Armed Forces) in Pietro Badoglio's military government. In September, Ambrosio helped negotiate an armistice with the Allies. The negotiations took longer than expected and allowed the Germans time to occupy much of Italy.
- Tucker, Spencer C. (2001). Who's Who In Twentieth-Century Warfare. Routledge. p. 6. ISBN 0-415-23497-2.
- Baudot, Marcel (1980). The Historical Encyclopedia of World War II. Facts on File Inc. p. 11. ISBN 0-87196-401-5.
- Gallo, Patrick (February 28, 2003). For Love and Country. Lanham, Maryland: University Press of America. p. 46. ISBN 978-0-7618-2496-1. Retrieved 2007-06-13.
- Dizdar et al. 1997, p. 239.