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.
| 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 | ||||
| Son | 2 August 1868 Born | 18 March 1913 Father assassinated, became king | None, 1868–1869 | ||
| Prince George, 1869–1890, brother | |||||
| 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 | ||||
| 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 |
| 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, 1940–1952, granduncle |
| Princess Sophia, 1952–1962, sister | |||||
| Princess Irene, 1962–1964, sister | |||||
| Princess Irene | Sister | 6 March 1964 Brother became king | 10 July 1965 Daughter born to king | ||
| None, 1965 | |||||
| Princess Alexia | Daughter | 10 July 1965 Born | 20 May 1967 Son born to king | Princess Irene, aunt | |
| Crown Prince Pavlos | Son | 20 May 1967 Born | 1 June 1973 Monarchy abolished, confirmed by 1973 and 1974 referenda | Princess Alexia, 1967–1969, sister | |
| Prince Nikolaos, 1969–1973, brother | |||||