List of current heirs presumptive
# List of current heirs presumptive

This is the list of current heirs presumptive to the thrones of the world as of 14 March 2023 [refresh].

| Country | Name of heir presumptive | Title | Date of birth (age) | Reason heir presumptive |
| - | - | - | - | - |
| Thailand | Dipangkorn Rasmijoti | Prince | (2005-04-29) 29 April 2005 (age 17) | Only officially recognized son of Vajiralongkorn, King of Thailand, but 1924 Palace Law of Succession means that King can name any royal male as heir apparent. |
| Spain | Leonor | Princess of Asturias | (2005-10-31) 31 October 2005 (age 17) | Daughter of the King, Felipe VI; if a son is born, he would be heir apparent. |
| Japan | Fumihito | Crown Prince Akishino | (1965-11-30) 30 November 1965 (age 57) | Brother to the current Emperor, Naruhito, who currently has a daughter ineligible, and could have a son. |
