In the redistribution of land among the Ernestine duchies that followed the death of the last Duke of Saxe-Gotha-Altenburg on 11 February 1825, the late Duke's nephew-in-law, Duke Ernst III of Saxe-Coburg-Saalfeld, received Gotha, while he ceded Saalfeld to the Duke of Saxe-Meiningen. On 12 November 1826 he thus became Ernst I of Saxe-Coburg and Gotha. The duchies of Saxe-Coburg and Saxe-Gotha remained in personal union until 1852, when a political union was effected.

This article is a list of those men who were heir-apparent or heir-presumptive to Saxe-Coburg and Gotha from 1826 until the abolition of the monarchy on 14 November 1918.

Heir to Ernest I, 1826–1844

Person	Name	Status	Relation	Became Hereditary Prince	Reason	Ceased to be Hereditary Prince	Reason	Next in succession, relation to heir
	Hereditary Prince Ernest	Heir apparent	Eldest son	12 November 1826	Father acceded to throne	29 January 1844	Acceded to throne as Ernest II	Prince Albert, brother

Heirs to Ernest II, 1844–1893

Person	Name	Status	Relation	Became Hereditary Prince	Reason	Ceased to be Hereditary Prince	Reason	Next in succession, relation to heir
	Albert, Prince Consort	Heir presumptive	Younger brother	29 July 1844	Elder brother acceded to throne	14 December 1861	Died	Albert Edward, Prince of Wales, son
	Albert Edward, Prince of Wales	Heir presumptive	Nephew	14 December 1861	Father died	19 April 1863	Renounced rights for himself and descendants	Prince Alfred, brother
	Prince Alfred, Duke of Edinburgh	Heir presumptive	Nephew	19 April 1863	Elder brother renounced rights for himself and descendants	22 August 1893	Acceded to throne as Alfred I	Prince Arthur, Duke of Connaught and Strathearn, 1863–1874, brother
								Prince Alfred of Edinburgh, 1874–1893, son

Heirs to Alfred I, 1893–1900

Person	Name	Status	Relation	Became Hereditary Prince	Reason	Ceased to be Hereditary Prince	Reason	Next in succession, relation to heir
	Hereditary Prince Alfred	Heir apparent	Eldest son	22 August 1893	Father acceded to throne	6 February 1899	Died	Prince Arthur, Duke of Connaught and Strathearn, uncle
	Prince Arthur, Duke of Connaught and Strathearn	Heir presumptive	Brother	6 February 1899	Nephew died	15 July 1899	Renounced rights for himself and descendants	Prince Arthur of Connaught, son
	Prince Charles Edward, Duke of Albany	Heir presumptive	Nephew	15 July 1899	Uncle renounced rights for himself and descendants	30 July 1900	Acceded to throne as Charles Edward I	Carlos I of Portugal, 3rd cousin

Heirs to Charles Edward I, 1900–1918

Person	Name	Status	Relation	Became Hereditary Prince	Reason	Ceased to be Hereditary Prince	Reason	Next in succession, relation to heir
	Carlos I of Portugal	Heir presumptive	3rd Cousin	30 July 1900	3rd cousin acceded to throne	2 August 1906	Son born to duke	Luís Filipe, Prince Royal of Portugal, son
	Hereditary Prince Johann Leopold	Heir apparent	Eldest son	2 August 1906	Born	14 November 1918	Monarchy abolished	Carlos I of Portugal, 1906–1908, 3rd cousin -1
								Luís Filipe, Prince Royal of Portugal, 1908, 4th cousin
								Manuel II of Portugal, 1908–1909, 4th cousin
								Prince Hubertus, 1909–1918, brother

Sources

• http://www.heraldica.org/topics/royalty/HGSachsen-CG.htm