Duke of Aosta (; ) was a title in the Italian nobility. It was established in the 13th century when Frederick II, Holy Roman Emperor, made the County of Aosta a duchy. The region was part of the Savoyard state and the title was granted to various princes of the House of Savoy, second sons of the reigning king of Sardinia or king of Italy.
The title was re-created in 1845 for Prince Amadeo, son of Victor Emmanuel II, and thereafter held by him and his descendants until the abolition of the Italian monarchy in 1946. Two holders briefly served as kings of European countries – Prince Amadeo ruled as king of Spain from 1870 to 1873, while his grandson Prince Aimone was titular king of Croatia from 1941 to 1943 during the Italian-backed fascist regime.
The subsidiary titles of the Duke of Aosta were Prince della Cisterna and of Belriguardo, Marquess of Voghera, and Count of Ponderano, originating from the heritage of Maria Vittoria dal Pozzo, the mother of Duke Emanuele Filiberto. Ponderano was created in 1559, Voghera in 1618; Cisterna and Belriguardo as princely in 1670.
Duke of Aosta, 1701–1715 Name Portrait Birth Marriages Death Charles Emmanuel III of Sardinia1701–1715 27 April 1701Royal Palace of Turinsecond son of Victor Amadeus II and Anne Marie d'Orléans (1) Anne Christine of the Palatinate-Sulzbach15 March 1722 Vercellione son(2) Polyxena of Hesse-Rotenburg20 August 1724Toruńsix children(3) Elisabeth Therese of Lorraine1 April 1737Royal Palace of Turinthree children 20 February 1773Royal Palace of Turinaged 71
Duke of Aosta, 1723–1725 Name Portrait Birth Marriages Death Prince Vittorio Amedeo1723–1725 7 March 1723Royal Palace of Turinonly son of Charles Emmanuel III and Anne Christine of the Palatinate-Sulzbach never married 11 August 1725Royal Palace of Turinaged 2
Duke of Aosta, 1731–1735
Name Portrait Birth Marriages Death Prince Emanuele Filiberto1731–1735 17 May 1731Royal Palace of Turinsecond son of Charles Emmanuel III and Polyxena of Hesse-Rotenburg never married 23 April 1735Royal Palace of Turinaged 3
Duke of Aosta, 1738–1745
Name Portrait Birth Marriages Death Prince Carlo Francesco1738–1745 1 December 1738Royal Palace of Turineldest son of Charles Emmanuel III and Elisabeth Therese of Lorraine never married 25 March 1745Royal Palace of Turinaged 6
Duke of Aosta, 1759–1802
Name Portrait Birth Marriages Death Victor Emmanuel I of Sardinia1759–1802 24 July 1759Royal Palace of Turinsecond son of Victor Amadeus III and Maria Antonia Ferdinanda of Spain Maria Theresa of Austria-Este25 April 1789Royal Palace of Turinseven children 10 January 1824Castle of Moncalieriaged 64
Duke of Aosta, 1845–present
Name Portrait Birth Marriages Death Amadeo I of Spain1845–1890(King of Spain1870–1873) 30 May 1845Royal Palace of Turinsecond son of Victor Emmanuel II and Adelaide of Austria (1) Maria Vittoria dal Pozzo30 May 1863Royal Palace of Turinthree sons(2) Maria Letizia Bonaparte11 September 1888Royal Palace of Turinone son 18 January 1890Royal Palace of Turinaged 44 Prince Emanuele Filiberto1890–1931 13 January 1869Genoaeldest son of Amedeo and Maria Vittoria dal Pozzo Hélène d'Orléans25 June 1895Church of St. Raphael, Kingston upon Thamestwo sons 4 July 1931Royal Palace of Turinaged 62 Prince Amedeo1931–1942 21 October 1898Royal Palace of Turineldest son of Emanuele Filiberto and Hélène d'Orléans Anne d'Orléans5 November 1927Naplestwo daughters 3 March 1942Nairobiaged 43 Prince Aimone1942–1948(King of Croatia1941–1943) 9 March 1900Royal Palace of Turinsecond son of Emanuele Filiberto and Hélène d'Orléans Irene of Greece and Denmark1 July 1939Florenceone son 29 January 1948Buenos Airesaged 47 Prince Amedeo1948–2021 27 September 1943Florenceonly son of Aimone and Irene of Greece and Denmark (1) Claude d'Orléans22 July 1964Sintra, Portugalthree children(2) Silvia Paternò di Spedalotto30 March 1987Villa Spedalottono issue 1 June 2021Castiglion Fibocchiaged 77 Prince Aimone2021–present 13 October 1967Florenceonly son of Amedeo Olga of Greece27 September 2008Patmos, Greece three children living
See also Duchess of Aosta
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