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The lordship of Piedmont, later the principality of Piedmont (Italian: Piemonte), was originally an appanage of the County of Savoy, and as such its lords were members of the Achaea branch of the House of Savoy. The title was inherited by the elder branch of the dynasty in 1418, at about which time Savoy was elevated to ducal status and Piedmont to princely status. When the House of Savoy was given the Kingdom of Sardinia, the Savoyards used the style of Prince of Piedmont (Italian: Principe di Piemonte) for their heir apparent. This first came into use by Prince Victor Amadeus of Savoy.

The usage was retained when Victor Emmanuel II became King of Italy, "Prince of Piedmont" becoming roughly equivalent to the British "Prince of Wales", the title bestowed to the Crown prince.

Lords of Piedmont

• ????–1233 Thomas I, also Count of Savoy
• 1233–1235 Amadeus IV, son of previous
• 1235–1259 Thomas II, brother of previous
• 1259–1282 Thomas III, son of previous
• 1282–1334 Philip I, son of previous, also Prince of Achaea (1301–1307)
• 1334–1367 James, son of previous, claimant to Achaea
• 1368–1368 Philip II, son of previous
• 1368–1402 Amadeus, brother of previous, claimant to Achaea
• 1402–1418 Louis, brother of previous

Princes of Piedmont

Note: The names in bold denote those that succeeded to the throne.

Picture	Name	Heir of	Birth	Became heir to the throne	Created Prince of Piedmont	Ceased to be Prince of Piedmont	Death
	Philip Emmanuel	Charles Emmanuel I	3 April 1586			9 February 1605
	Victor Amadeus	8 May 1587	9 February 1605 brothers death		26 July 1630 became Duke	7 October 1637
	Francis Hyacinth	Victor Amadeus I	14 September 1632			7 October 1637 became Duke	4 October 1638
	Victor Amadeus	Victor Amadeus II	6 May 1699			22 March 1715
	Charles Emmanuel	27 April 1701	22 March 1715 brother's death		3 September 1730 became King	20 February 1773
	Victor Amadeus	Charles Emmanuel III	26 June 1726	3 September 1730 father became King		24 May 1751 became styled as Duke of Savoy	16 October 1796
	Charles Emmanuel	Victor Amadeus III	24 May 1751	20 February 1773 father became King		16 October 1796 became King	6 October 1819

Princes of Piedmont and Naples

When the House of Savoy became the ruling dynasty of Italy in 1861, they continued to use the title of Prince of Piedmont for the heir apparent but also began alternating it with a new title, the Prince of Naples.

Picture	Name	Heir of	Birth	Became heir to the throne	Created Prince of Piedmont	Ceased to be Prince of Piedmont	Death
Prince of Piedmont
	Humbert	Victor Emmanuel II	14 March 1844	23 March 1849 father became King		9 January 1878 became King	29 July 1900
Prince of Naples
	Victor Emmanuel	Umberto I	11 November 1869	9 January 1878 father became King		29 July 1900 became King	28 December 1947
Prince of Piedmont
	Humbert	Victor Emmanuel III	15 September 1904		29 September 1904	9 May 1946 became King	18 March 1983
Prince of Naples
	Victor Emmanuel	Umberto II	12 February 1937	9 May 1946 father became King		12 June 1946 Monarchy abolished	3 February 2024

Insignia

• 
  Royal Standard of the Prince of Piedmont
• 
  Coat of arms of the
  Prince of Piedmont