Prince Aimone, 4th Duke of Aosta (Aimone Roberto Margherita Maria Giuseppe Torino; 9 March 1900 – 29 January 1948) was a prince of Italy's reigning House of Savoy and an officer of the Royal Italian Navy. The second son of Prince Emanuele Filiberto, Duke of Aosta he was granted the title Duke of Spoleto on 22 September 1904. He inherited the title Duke of Aosta on 3 March 1942 following the death of his brother Prince Amedeo, in a British prisoner of war camp in Nairobi.