List of heirs to the Danish throne lists all who have been first-in-line to the throne of the Kingdom of Denmark since the establishment of the King's Law in 1665.
+Heirs to the Danish throne House of Oldenburg (1665–1863) Monarch Heir Relationshipto monarch Became heir(Date; Reason) Ceased to be heir(Date; Reason) Next in line of succession Frederik III Crown Prince Christian Son 14 November 1665King's Law established 9 February 1670Father died, became king Prince Jørgen, brotherChristian V Prince Jørgen Brother 9 February 1670Brother became king 2 October 1671Son born to king Anna Sophie, Hereditary Electress of Saxony, sisterCrown Prince FrederikSon2 October 1671Born25 August 1699Father died, became king Prince Jørgen, 1671–1672, uncle Prince Christian Vilhelm, 1672–1673, brother Prince Jørgen, 1673–1675, uncle Prince Christian, 1675–1695, brother Prince Carl, 1695–1697, brother Prince Christian, 1697–1698, son Prince Carl, 1698–1699, brotherFrederik IV Prince Carl Brother 25 August 1699Brother became king 10 December 1699Son born to king Prince Vilhelm, brotherCrown Prince ChristianSon10 December 1699Born12 October 1730Father died, became king Prince Carl, 1699–1701, uncle Prince Frederik Karl, 1701–1702, brother Prince Carl, 1702–1703, uncle Prince Jørgen, 1703–1704, brother Prince Carl, 1704–1723, uncle Prince Frederik, 1723–1730, sonChristian VICrown Prince FrederikSon12 October 1730Father became king6 August 1746Father died, became king Princess Louise, 1730–1745, sister Prince Christian, 1745–1746, sonFrederik V Crown Prince Christian Son 6 August 1746Father became king 3 June 1747Died Princess Sophie Magdalene, sisterPrincess Sophie MagdaleneDaughter3 June 1747Brother died29 January 1749Son born to king Princess Louise, 1747, aunt Princess Vilhelmine Karoline, 1747–1749, sisterCrown Prince ChristianSon29 January 1749Born14 January 1766Father died, became king Princess Sophie Magdalene, 1749–1753, sister Prince Frederik, 1753–1766, half-brotherChristian VII Hereditary Prince Frederik Half-brother 14 January 1766Half-brother became king 28 January 1768Son born to king Sophie Magdalene, Crown Princess of Sweden, half-sisterCrown Prince FrederikSon28 January 1768Born13 March 1808Father died, became king Prince Frederik, 1768–1791, uncle Prince Christian, 1791, son Prince Frederik, 1791–1797, uncle Prince Christian, 1797, son Prince Frederik, 1797–1805, uncle Prince Christian Frederik, 1805–1808, first cousinFrederik VIHereditary Prince Christian FrederikFirst cousin13 March 1808First cousin became king3 December 1839First cousin died, became king Prince Ferdinand, 1808, brother Prince Frederik, 1808–1839, son Crown Prince Frederik Son 3 December 1839Father became king 20 January 1848Father died, became king Prince Ferdinand, uncleFrederik VIIHereditary Prince FerdinandUncle20 January 1848Nephew became king29 June 1863Died Succession uncertain, 1848–1853 Prince Christian of Schleswig-Holstein-Sonderburg-Glücksburg,1853–1863, first cousin once-removed 29 June 1863 15 November 1863 House of Glücksburg (1863–present) Monarch Heir Relationshipto monarch Became heir(Date; Reason) Ceased to be heir(Date; Reason) Next in line of successionChristian IXCrown Prince FrederikSon15 November 1863Father became king29 January 1906Father died, became king Prince Valdemar, 1863–1868, brother Crown Prince Constantine of Greece, 1868-1870, nephew Prince Christian, 1870–1906, son Crown Prince Christian Son 29 January 1906Father became king 14 May 1912Father died, became king Prince Frederik, son Christian X Crown Prince Frederik Son 14 May 1912Father became king 20 April 1947Father died, became king Prince Knud, brotherFrederik IX Hereditary Prince Knud Brother 20 April 1947Brother became king 5 June 1953 Prince Ingolf, sonPrincess MargretheDaughter5 June 1953Law of succession changed14 January 1972Father died, became queen Princess Benedikte, 1953–1968, sister Prince Frederik, 1968–1972, sonMargrethe IICrown Prince FrederikSon14 January 1972Mother became queen14 January 2024Mother abdicated, became king Prince Joachim, 1972–2005, brother Prince Christian, 2005–2024, son Frederik X Crown Prince Christian Son 14 January 2024Father became kingIncumbent Princess Isabella, sister
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