Prince Luigi Amedeo, Duke of the Abruzzi (29 January 1873 – 18 March 1933) was an Italian mountaineer and explorer, briefly Infante of Spain as son of Amadeo I of Spain, member of the royal House of Savoy and cousin of the Italian King Victor Emmanuel III.
He is known for his Arctic explorations and for his mountaineering expeditions, particularly to Mount Saint Elias (Alaska–Yukon) and K2 (Pakistan–China).
He also served as an Italian admiral during World War I.