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An heir apparent[note 1] is a person who is first in an order of succession and cannot be displaced from inheriting by the birth of another person. An heir presumptive, by contrast, is someone who is first in line to inherit a title but who can be displaced by the birth of a more eligible heir.
Today these terms most commonly describe heirs to hereditary titles (e.g. titles of nobility) or offices, especially when only inheritable by a single person. Most monarchies refer to the heir apparent of their thrones with the descriptive term of crown prince or crown princess, but they may also be accorded with a more specific substantive title:[note 2] such as Prince of Orange in the Netherlands, Duke of Brabant in Belgium, Prince of Asturias in Spain (also granted to heirs presumptive), or Prince of Wales in the United Kingdom; former titles include Dauphin in the Kingdom of France, and Tsesarevich in Imperial Russia.
The term is also used metaphorically to indicate an expected successor to any position of power, e.g. a political or corporate leader.
This article primarily describes the term heir apparent in a hereditary system regulated by laws of primogeniture—it may be less applicable to cases where a monarch has a say in naming the heir (performed either while alive, e.g. crowning the heir as a rex iunior, or through the monarch's will).
Heir apparent versus heir presumptive
In a hereditary system governed by some form of primogeniture, an heir apparent is easily identifiable as the person whose position as first in the line of succession to a title or office is secure, regardless of future births. An heir presumptive, by contrast, can always be "bumped down" in the succession by the birth of somebody more closely related in a legal sense (according to that form of primogeniture) to the current title-holder.
The clearest example occurs in the case of a childless bearer of a hereditary title that can only be inherited by one person. If at any time the title bearer were to produce children, those children would rank ahead of any person who had formerly been heir presumptive.
Many legal systems assume childbirth is always possible regardless of age or health. In such circumstances a person may be, in a practical sense, the heir apparent but still, legally speaking, heir presumptive. Indeed, when Queen Victoria succeeded her uncle King William IV, the wording of the proclamation even gave as a caveat:
...saving the rights of any issue of his late Majesty King William IV, which may be born of his late Majesty's consort.
This provided for the possibility that William's wife, Adelaide of Saxe-Meiningen, was pregnant at the moment of his death, since such a posthumous child, regardless of its sex, would have displaced Victoria from the throne. Adelaide was 44 at the time, so pregnancy was possible even if unlikely.
Daughters in male-preference primogeniture
Daughters (and their lines) may inherit titles that descend according to male-preference primogeniture, but only in default of sons (and their heirs). That is, both female and male offspring have the right to a place somewhere in the order of succession, but when it comes to what that place is, a female will rank behind her brothers regardless of their ages or her age.
Thus, normally, even an only daughter will not be heir apparent, since at any time a brother might be born who, though younger, would assume that position. Hence, she is an heir presumptive. For example, Queen Elizabeth II was heir presumptive during the reign of her father, King George VI, because at any stage up to his death, George could have fathered a legitimate son.
Women as heirs apparent
In a system of absolute primogeniture that disregards gender, female heirs apparent occur. As succession to titles, positions, or offices in the past most often favoured males, females considered to be an heir apparent were rare. Absolute primogeniture was not practised by any modern monarchy for succession to their thrones until the late twentieth century, with Sweden being the first to adopt absolute primogeniture in 1980 and other Western European monarchies following suit.
Since the adoption of absolute primogeniture by contemporary Western European monarchies, examples of female heirs apparent include Crown Princess Victoria of Sweden, Princess Catharina-Amalia of the Netherlands, and Princess Elisabeth of Belgium; they are, respectively, the oldest children of Kings Carl XVI Gustaf, Willem-Alexander, and Philippe. Princess Ingrid Alexandra of Norway is heir apparent to her father, who is heir apparent to the Norwegian throne, and Victoria herself has a female heir apparent in her oldest child, Princess Estelle. Victoria was not heir apparent from birth (in 1977), but gained the status in 1980 following a change in the Swedish Act of Succession. Her younger brother Carl Philip (born 1979) was thus heir apparent for a few months (and is a rare example of an heir apparent losing this status without a death occurring).
In 2015, pursuant to the 2011 Perth Agreement, the Commonwealth realms changed the rules of succession to the 16 thrones of Elizabeth II to absolute primogeniture, except for male heirs born before the Perth Agreement. The effects are not likely to be felt for many years; the first two heirs at the time of the agreement (Charles, Prince of Wales, and his son Prince William, Duke of Cambridge) were already eldest born children, and in 2013 William's first-born son Prince George of Cambridge became the next apparent successor.
But even in legal systems that apply male-preference primogeniture, female heirs apparent are by no means impossible: if a male heir apparent dies leaving no sons but at least one daughter, then the eldest daughter would replace her father as heir apparent to whatever throne or title is concerned, but only when it has become clear that the widow of the deceased is not pregnant. Then, as the representative of her father's line she would assume a place ahead of any more distant relatives. Such a situation has not to date occurred with the English or British throne; several times an heir apparent has died, but each example has either been childless or left a son or sons. However, there have been several female heirs apparent to British peerages (e.g. Frances Ward, 6th Baroness Dudley, and Henrietta Wentworth, 6th Baroness Wentworth).
In one special case, however, England and Scotland had a female heir apparent. The Revolution settlement that established William and Mary as joint monarchs in 1689 only gave the power to continue the succession through issue to Mary II, eldest daughter of the previous king, James II. William, by contrast, was to reign for life only, and his (hypothetical) children by a wife other than Mary would be placed in his original place (as Mary's first cousin) in the line of succession – after Mary's younger sister Anne. Thus, although after Mary's death William continued to reign, he had no power to beget direct heirs, and Anne became the heir apparent for the remainder of William's reign. She eventually succeeded him as Queen of England, Scotland and Ireland.
Displacement of heirs apparent
The position of an heir apparent is normally unshakable: it can be assumed they will inherit. Sometimes, however, extraordinary events—such as the death or the deposition of the parent—intervene.
People who lost heir apparent status
- Al-Mufawwid on 30 April 892, al-Muwaffad was removed from the succession (heir apparent) completely, and when al-Mu'tamid died in October 892, he was succeeded by Al-Mu'tadid.
- Parliament deposed James Francis Edward Stuart, the infant son of King James II & VII (of England and Scotland respectively) whom James II was raising as a Catholic, as the King's legal heir apparent—declaring that James had, de facto, abdicated—and offered the throne to James II's oldest daughter, the young prince's much older Protestant half-sister, Mary (along with her husband, Prince William of Orange). When the exiled King James died in 1701, his Jacobite supporters proclaimed the exiled Prince James Francis Edward as King James III of England and James VIII of Scotland; but neither he nor his descendants were ever successful in their bids for the throne.
- Crown Prince Gustav (later known as Gustav, Prince of Vasa), son of Gustav IV Adolf of Sweden, lost his place when his father was deposed and replaced by Gustav IV Adolf's aged uncle, the Duke Carl, who became Charles XIII of Sweden in 1809. The aged King Charles XIII did not have surviving sons, and Prince Gustav was the only living male of the whole dynasty (besides his deposed father), but the prince was never regarded as heir of Charles XIII, although there were factions in the Riksdag and elsewhere in Sweden who desired to preserve him, and, in the subsequent constitutional elections, supported his election as his grand-uncle's successor. Instead, the government proceeded to have a new crown prince elected (which was the proper constitutional action, if no male heir was left in the dynasty), and the Riksdag elected first August, Prince of Augustenborg, and then, after August's death, the Prince of Ponte Corvo (Marshal Jean-Baptiste Bernadotte, who acceded as Charles XIV John in 1818). The two lines united later, when Charles XIV John's great-grandson Crown Prince Gustaf (who acceded as Gustaf V in 1907) married Gustav IV Adolf's great-granddaughter Victoria of Baden, who became Crown Princess of Sweden. Thus, from Gustav VI Adolf onwards, the kings of Sweden are direct descendants of both Gustav IV Adolf and his son's replacement as crown prince, Charles XIV John.
- Prince Carl Philip of Sweden, at his birth in 1979, was heir apparent to the throne of Sweden. Less than eight months later, a change in that country's succession laws instituted absolute primogeniture, and Carl Philip was supplanted as heir apparent by his elder sister Victoria.
- Muqrin bin Abdulaziz became Crown Prince of Saudi Arabia in January 2015 upon the death of his half-brother King Abdullah bin Abdulaziz Al Saud and the accession of another half-brother, Salman bin Abdulaziz Al Saud, to the Saudi throne. In April of that year, Salman removed Muqrin as Crown Prince, replacing him with their nephew Muhammad bin Nayef. Muhammad bin Nayef himself was later replaced as Crown Prince by the king's son Mohammad bin Salman.
Breaching legal qualification of heirs apparent
In some jurisdictions, an heir apparent can automatically lose that status by breaching certain constitutional rules. Today, for example:
- A British heir apparent would lose this status if he or she became a Catholic. This is the only religion-based restriction on the heir-apparent. (Previously, marrying a Catholic also equated to losing this status, however, in October 2011, the governments of the 16 Commonwealth realms —of which Queen Elizabeth II is monarch— agreed to remove the restriction on marriage to a Catholic. All of the Commonwealth realms subsequently passed legislation to implement the change, which fully took effect in March 2015.)
- Swedish Crown Princes and Crown Princesses would lose heir apparent status, according to the Act of Succession, if they married without approval of the monarch and the Government, abandoned the "pure Evangelical faith", or accepted another throne without the approval of the Riksdag.
- Dutch Princes and Princesses of Orange would lose status as heir to the throne if they married without the approval of the States-General, or simply renounced the right.
- Spanish Princes and Princesses of Asturias would lose status if they married against the express prohibition of the monarch and the Cortes.
- Belgian Dukes and Duchesses of Brabant would lose heir apparent status if they married without the consent of the monarch, or became monarch of another country.
- Danish Crown Princes and Princesses would lose status if they married without the permission of the monarch. When the monarch grants permission for a dynast to enter marriage, he may set conditions that must be met for the dynasts and/or their children to gain or maintain a place in the line of succession; this also applies for Crown Princes and Princesses.
Current heirs apparent
|Country||Picture||Name of Heir apparent||Title||Date of Birth (age)||Relation to Monarch|
|Bahrain||Salman bin Hamad bin Isa Al Khalifa||Crown Prince of Bahrain,
|October 21, 1969||eldest son|
Duchess of Brabant
|October 25, 2001||eldest child|
|Bhutan||Jigme Namgyel Wangchuck||Dragon Prince of Bhutan,
Druk Gyalsey of Bhutan
|February 5, 2016||eldest child|
|Brunei||Al-Muhtadee Billah||Crown Prince of Brunei Darussalam||February 17, 1974||eldest son|
|Denmark||Frederik||Crown Prince of Denmark,
Count of Monpezat
|May 26, 1968||eldest child|
|Dubai||Hamdan bin Mohammed bin Rashid al Maktoum||Sheikh,
Crown Prince of Dubai
|November 14, 1982||second son|
|Jordan||Hussein bin Abdullah||Crown Prince of Jordan||June 28, 1994||eldest son|
|Kuwait||Mishal Al-Ahmad Al-Jaber Al-Sabah||Sheikh,
Crown prince of Kuwait
|1940 (age 80)||younger brother|
|Lesotho||Lerotholi Seeiso||Crown Prince of Lesotho||April 18, 2007||only son|
|Liechtenstein||Alois||Hereditary Prince of Liechtenstein||June 11, 1968||eldest son|
|Luxembourg||Guillaume||Hereditary Grand Duke of Luxembourg||November 11, 1981||eldest child|
|Monaco||Jacques||Hereditary Prince of Monaco, Marquis of Baux||December 10, 2014||only legitimate son|
|Morocco||Moulay Hassan||Crown Prince of Morocco||May 8, 2003||only son|
|Netherlands||Catharina-Amalia||Princess of Orange||December 7, 2003||eldest child|
|Norway||Haakon Magnus||Crown Prince of Norway||July 20, 1973||only son|
|Oman||Theyazin bin Haitham||Crown Prince of Oman||August 21, 1990||child|
|Saudi Arabia||Mohammad bin Salman bin Abdulaziz Al Saud||Crown Prince of Saudi Arabia||August 31, 1985||child|
|Sweden||Victoria||Crown Princess of Sweden,
Duchess of Västergötland
|July 14, 1977||eldest child|
|Tonga||Tupoutoʻa ʻUlukalala||Crown Prince of Tonga||September 17, 1985||eldest son|
| United Kingdom
and 15 other Commonwealth realms
|Charles||Prince of Wales,
Duke of Cornwall,
Duke of Rothesay
|November 14, 1948||eldest son|
Heirs apparent who never inherited the throne
Heirs apparent who predeceased the monarch
Heirs apparent who were forced to abandon their claim
|Heir apparent||Lived||Heir of||Forced out|
|Liu Rong||Died 148 BC||Emperor Jing of Han||His mother angered the emperor by requesting the position of empress and denying the marriage of Chen Jiao and him|
|Kunala||Born 263 BC||Ashoka||Blinded|
|Antipater||BC 46–BC 4||Herod the Great||Disinherited after being charged with intended murder. Subsequently executed.|
|Alexander||BC 35–BC 7||Disinherited and executed|
|Aristobulus IV||BC 31–BC 7|
|Herod II||BC 27–33 AD||Disinherited|
|Agrippa Postumus||BC 12–14 AD||Augustus||Banished. Later executed by his own guards after the accession of Tiberius|
|Yuan Xun||483-497||Emperor Xiaowen of Northern Wei||Disagreement of his father's policy|
|Niketas the Persian||Died 636||Shahrbaraz||Killed after 40 days of rule|
|Yang Yong||Died 604||Emperor Wen of Sui||Forced to abdicate and killed by younger brother Yang Guang|
|Li Chengqian||619-645||Emperor Taizong of Tang||Exiled from immorality and treason|
|Li Zhong||642-665||Emperor Gaozong of Tang||Empress Wu Zetian got the favor from Gaozong and his position was taken by his half brother Li Hong|
|Li Xian||655-684||Exiled by Empress Wu Zetian from rumors. And forced to commit suicide after Gaozong's death|
|Prince Kusakabe||662–689||Emperor Tenmu||Did not assume throne|
|Li Chengqi||679-742||Emperor Ruizong of Tang||Gave up the claim because he thought that he did not have the strength to be a wise emperor|
|Alexios Mosele||9th century||Theophilos||Disinherited for rebellion|
|Al-Mufawwid||Died 890s||Al-Mu'tamid (Abbasid caliph)||On 30 April 892, Al-Mufawwid was removed from the succession by his cousin, al-Mu'tadid and when al-Mu'tamid died in October 892, he was succeeded by al-Mu'tadid.|
|Al-Abbas ibn Ahmad ibn Tulun||Died 884||Ahmad ibn Tulun||Attempted to overthrow his father|
|Li Yu||Died in 904||Emperor Zhaozong of Tang||Actually inherited the throne in fact, but not recognized as an emperor. Became crown prince again after two months and killed by Zhu Wen|
|Prince Atsuyasu||999-1019||Emperor Ichijō||Kugyō Fujiwara no Yukinari and Fujiwara no Michinaga forced him to give up the status and his half brother Prince Atsuhira took his position.|
|Al-Malik al-Aziz||Died 1049||Jalal al-Dawla||Late ruler's nephew Abu Kalijar took the throne instead|
|Conrad II of Italy||1074–1101||Henry IV, Holy Roman Emperor||Disinherited for rebellion|
|Min Shin Saw||1117–1167||Alaungsithu||Exiled|
|William I, Count of Boulogne||1137–1159||Stephen, King of England||Treaty of Wallingford|
|Demna of Georgia||1155–1178||David V of Georgia||Imprisoned, blinded and castrated by his uncle, King George III of Georgia|
|Zhao Hong||Died 1225||Emperor Ningzong||Shi Miyuan and Empress Yang faked the edict of emperor.|
|Henry (VII) of Germany||1211–1242||Frederick II, Holy Roman Emperor||Disinherited for rebellion|
|James of Majorca||1275–1330||James II of Majorca||Became a monk|
|James of Aragon||1296–1334||James II of Aragon||Became a monk|
|Otto, Duke of Lolland and Estonia||1310–1346||Christopher II of Denmark||Forced to surrender claim to the throne in favor of his brother Valdemar IV of Denmark|
|Eric XII of Sweden||1339–1359||Magnus VII of Norway||Became King of Sweden, with his brother Haakon VI of Norway taking the throne of Norway|
|Baw Ngan-Mohn||1370–1390||Binnya U||Imprisoned|
|Dmitry Ivanovich||1483–1509||Ivan III of Russia||Disinherited in favor of uncle Vasili III of Russia|
|Carlos, Prince of Asturias||1545–1568||Philip II of Spain||Arrested and imprisoned by his father; died in prison six months later|
|Minye Kyawswa II of Ava||1567–1599||Nanda Bayin||Defected|
|Yinreng||1674–1725||The Kangxi Emperor||Imprisoned for life by Kangxi for immorality and treason; replaced by his brother Yongzheng Emperor|
|Alexei Petrovich, Tsarevich of Russia||1690–1718||Peter the Great of Russia||Imprisoned by his father and forced to relinquish his claim. Died in prison.|
|Philip, Duke of Calabria||1747–1777||Charles III of Spain||Intellectually disabled; removed from the line of succession in favor of his brothers Charles and Ferdinand|
|Pedro, Prince Imperial of Brazil||1825–1891||Pedro IV of Portugal||Became heir solely to Brazil, with his sister Maria becoming heir presumptive|
|Mustafa Fazıl Pasha||1830–1875||Isma'il Pasha||Succession law changed to pass from father to son instead of brother to brother; replaced by Tewfik Pasha|
|Tengku Alam Shah||1846–1891||Sultan Ali of Johor||Throne given to kinsman Abu Bakar of Johor instead|
|George, Crown Prince of Serbia||1887–1972||Peter I of Serbia||Abdicated his succession rights in 1909; replaced by his brother Alexander|
|Muhammad of Saudi Arabia||1910–1988||King Faisal ibn Abdul-Aziz||Forced to abdicate in 1965; replaced by his brother Khalid|
|Tunku Abdul Rahman of Johor||1933–1989||Ismail of Johor||His elder brother Iskandar of Johor was reinstated after previously being forced to renounce his rights|
|Muqrin of Saudi Arabia||1945–||King Salman bin Abdulaziz Al Saud||Removed as Crown Prince in April 2015; replaced by his nephew Muhammad bin Nayef|
|Hassan of Jordan||1947–||King Hussein of Jordan||He was replaced by his nephew Abdullah only days before the king died in 1999|
|Muhammad bin Nayef of Saudi Arabia||1959–||King Salman bin Abdulaziz Al Saud||Removed as Crown Prince in June 2017; replaced by his cousin Mohammad bin Salman|
|Mishaal bin Hamad bin Khalifa Al Thani||1972–||Hamad bin Khalifa Al Thani||Renounced his claim in 1996 in favor of his younger half-brother, Sheikh Jasim|
|Jassim bin Hamad bin Khalifa Al Thani||1978–||Renounced his claim in 2003 in favor of his younger brother, Sheikh Tamim|
|Prince Carl Philip of Sweden||1979–||Carl XVI Gustaf of Sweden||Swedish succession laws were changed in 1980. Carl Philip was supplanted by his elder sister Victoria|
|Prince Hamzah of Jordan||1980–||Abdullah II of Jordan||Title of Crown Prince removed in 2004. Hamzah was supplanted by his half-nephew Hussein|
Heirs apparent of monarchs who themselves abdicated or were deposed
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