# List of heirs to the Greek throne

The list includes all individuals who were first in line to the throne of Greece, either as heir apparent or as heir presumptive, since 1832 (cf. Crown Prince of Greece). Those who actually succeeded to the throne are shown in bold.

## Heir to the throne (House of Wittelsbach)

| Monarch | Heir | Relationship to monarch | Became heir; reason | Ceased to be heir; reason | Next in succession, relation to heir |
| Otto I | Luitpold Karl | Younger brother | 27 May 1832; Formation of Kingdom of Greece | 18 March 1844; Non-Orthodox dynasts excluded from succession | Adalbert Wilhelm, brother |

## Heir to the throne (House of Glücksburg)

Heirs to the Greek throne :
| House of Glücksburg (1863–1924) ||||||
| Monarch | Heir | Relationship to monarch | Became heir (Date; Reason) | Ceased to be heir (Date; Reason) | Next in line of succession |
| George I | None, 1863–1868 | None, 1863–1868 | None, 1863–1868 | None, 1863–1868 | None, 1863–1868 |
| George I | Crown Prince Constantine | Son | 2 August 1868 Born | 18 March 1913 Father assassinated, became king | None, 1868–1869 |
| George I | Crown Prince Constantine | Son | 2 August 1868 Born | 18 March 1913 Father assassinated, became king | Prince George, 1869–1890, brother |
| George I | Crown Prince Constantine | Son | 2 August 1868 Born | 18 March 1913 Father assassinated, became king | Prince George, 1890–1913, son |
| Constantine I | Crown Prince George | Son | 18 March 1913 Father became king | 11 June 1917 Father deposed, younger brother selected as king | Prince Alexander, brother |
| Alexander I | None, 1917–1920 | None, 1917–1920 | None, 1917–1920 | None, 1917–1920 | None, 1917–1920 |
| Constantine I | Crown Prince George | Son | 19 December 1920 Father restored as king by referendum | 27 September 1922 Father abdicated, became king | Prince Paul, brother |
| George II | Prince Paul | Brother | 27 September 1922 Brother became king | 25 March 1924 Monarchy abolished, confirmed by referendum | Prince George, uncle |
| House of Glücksburg (restoration) (1935–1973) ||||||
| Monarch | Heir | Relationship to monarch | Became heir (Date; Reason) | Ceased to be heir (Date; Reason) | Next in line of succession |
| George II | Prince Paul | Brother | 25 November 1935 Monarchy restored by referendum | 1 April 1947 Brother died, became king | Prince George, 1935–1940, uncle |
| George II | Prince Paul | Brother | 25 November 1935 Monarchy restored by referendum | 1 April 1947 Brother died, became king | Prince Constantine, 1940–1947, son |
| Paul I | Crown Prince Constantine | Son | 1 April 1947 Father became king | 6 March 1964 Father died, became king | Prince George, 1947–1952, granduncle |
| Paul I | Crown Prince Constantine | Son | 1 April 1947 Father became king | 6 March 1964 Father died, became king | Princess Sophia, 1952–1962, sister |
| Paul I | Crown Prince Constantine | Son | 1 April 1947 Father became king | 6 March 1964 Father died, became king | Princess Irene, 1962–1964, sister |
| Constantine II | Princess Irene | Sister | 6 March 1964 Brother became king | 10 July 1965 Daughter born to king | Prince Michael, 1964–1965, first cousin once-removed |
| Constantine II | Princess Irene | Sister | 6 March 1964 Brother became king | 10 July 1965 Daughter born to king | None, 1965 |
| Constantine II | Princess Alexia | Daughter | 10 July 1965 Born | 20 May 1967 Son born to king | Princess Irene, aunt |
| Constantine II | Crown Prince Pavlos | Son | 20 May 1967 Born | 1 June 1973 Monarchy abolished, confirmed by 1973 and 1974 referenda | Princess Alexia, 1967–1969, sister |
| Constantine II | Crown Prince Pavlos | Son | 20 May 1967 Born | 1 June 1973 Monarchy abolished, confirmed by 1973 and 1974 referenda | Prince Nikolaos, 1969–1973, brother |
* ↑ On 11 June 1917, King Constantine I was deposed from the throne, and his second son, Prince Alexander was selected by the Allies of World War I to act as a puppet king, after the refusal of both Constantine I's eldest son (Crown Prince George) and brother (Prince George). Eventually all the members of the royal family went into exile, except for Alexander himself. King Alexander considered himself as merely a regent in the name of his father, as neither he nor his elder brother had abdicated. On 25 October 1920, Alexander died of sepsis after being bit by a monkey on 2 October. Still unwilling to restore Constantine I to the throne, the government of Eleftherios Venizelos offered the crown to his third son (Prince Paul), receiving another refusal on the same grounds of loyalty to Constantine I. On 14 November, Venizelos was defeated in the 1920 Greek legislative election and the new government of Dimitrios Rallis asked Queen Dowager Olga (who was allowed to return to Greece as Alexander was dying) to assume the regency until Constantine I's restoration on 19 December, after a referendum.
* ↑ In 1952, the law of succession was changed from agnatic primogeniture to male-preference primogeniture.
* ↑ In 1962, Princess Sophia renounced her claim to the throne, in order to marry Juan Carlos, Prince of Asturias.