King of the Belgians
Koning der Belgen (Dutch) Roi des Belges (French) König der Belgier (German)
Federal
Royal coat of arms of Belgium
Incumbent
Philippe since 21 July 2013
Details
Style	His Majesty
Heir apparent	Princess Elisabeth, Duchess of Brabant
First monarch	Leopold I
Formation	21 July 1831; 193 years ago (1831-07-21)
Residence	Royal Palace of Brussels Royal Castle of Laeken
Website	The Belgian Monarchy

House of Belgium Saxe-Coburg-Belgium
Coat of arms of the Royal House
Parent house	Saxe-Coburg and Gotha
Place of origin	Belgium
Founded	1831; 193 years ago (1831)
Founder	Albert I of Belgium
Current head	Philippe

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The monarchy of Belgium is the constitutional and hereditary institution of the monarchical head of state of Belgium. As a popular monarchy, the Belgian monarch uses the title king/queen of the Belgians^[a] and serves as the country's head of state and commander-in-chief of the Belgian Armed Forces.

There have been seven Belgian monarchs since independence in 1830. The incumbent, Philippe, ascended the throne on 21 July 2013, following the abdication of his father Albert II.

When Belgium gained independence from the United Kingdom of the Netherlands in 1830, the National Congress chose a constitutional monarchy as the form of government. The Congress voted on the question on 22 November 1830, supporting monarchy by 174 votes to 13. In February 1831, the Congress nominated Louis, Duke of Nemours, the son of the French king Louis-Philippe, but international considerations deterred Louis-Philippe from accepting the honour for his son.^{[citation needed]}

Following this refusal, the National Congress appointed Erasme-Louis, Baron Surlet de Chokier to be the Regent of Belgium on 25 February 1831. Leopold of Saxe-Coburg-Saalfeld, since 1826 also called Prince of Saxe-Coburg and Gotha, was designated as King of the Belgians by the National Congress and swore allegiance to the Belgian constitution in front of Saint James's Church at Coudenberg Palace in Brussels on 21 July.^[1] This day has since become a national holiday for Belgium and its citizens.^[2]

As a hereditary constitutional monarchy system, the role and operation of Belgium's monarchy are governed by the Constitution. The royal office of King is designated solely for a descendant of the first King of the Belgians, Leopold I.

Since he is bound by the Constitution (above all other ideological and religious considerations, political opinions and debates and economic interests) the King is intended to act as an arbiter and guardian of Belgian national unity and independence.^[3] Belgium's monarchs are inaugurated in a purely civil swearing-in ceremony.

The Kingdom of Belgium was never an absolute monarchy. Nevertheless, in 1961, the historian Ramon Arango, wrote that the Belgian monarchy is not "truly constitutional".^{[4][clarification needed]}

King Leopold I was head of Foreign Affairs "as an ancien régime monarch", the foreign ministers having the authority to act only as ministers of the king.^[5] Leopold I quickly became one of the most important shareholders of the Société Générale de Belgique.^[6]

Leopold's son, King Leopold II, is chiefly remembered for the founding and capitalization of the Congo Free State as a personal fiefdom. There was scandal when the atrocities in the Congo Free State were made public, causing the Free State to be taken over by the Belgian Government. Many Congolese were killed as a result of Leopold's policies in the Congo before the reforms of direct Belgian rule.^[7][8][9] The Free State scandal is discussed at the Museum of the Congo at Tervuren in Belgium.^[10]

On several occasions Leopold II publicly expressed disagreement with the ruling government (e.g. on 15 August 1887, and in 1905, against Prime Minister Auguste Beernaert)^[11] and was accused by Yvon Gouet of noncompliance with the country's parliamentary system.^[12]

Leopold II died without surviving legitimate sons. The line now descends from his nephew and successor, Albert I of Belgium, who ruled while 90% of Belgium was overrun by the forces of Kaiser Wilhelm II and is notable for his forays into colonial rule of the Belgian Congo and later, abeyant Wilhelm, the League of Nations mandate in Ruanda-Urundi. In 1934, Albert died under mysterious circumstances as he climbed solo on the Roche du Vieux Bon Dieu at Marche-les-Dames.

Louis Wodon (the chef de cabinet of Leopold III from 1934 to 1940), thought the King's oath to the Constitution implied a royal position "over and above the Constitution". He compared the King to a father, the head of a family, "Regarding the moral mission of the king, it is permissible to point to a certain analogy between his role and that of a father, or more generally, of parents in a family. The family is, of course, a legal institution as is the state. But what would a family be where everything was limited among those who compose it to simply legal relationships? In a family when one considers only legal relationships one comes very close to a breakdown in the moral ties founded on reciprocal affection without which a family would be like any other fragile association"^[13] According to Arango, Leopold III of Belgium shared these views about the Belgian monarchy.

In 1991, towards the end of the reign of Baudouin, Senator Yves de Wasseige, a former member of the Belgian Constitutional Court, cited four points of democracy which the Belgian Constitution lacks:^[14]

1. the King chooses the ministers,
2. the King is able to influence the ministers when he speaks with them about bills, projects and nominations,
3. the King promulgates bills, and,
4. the King must agree to any change of the Constitution

The Belgian monarchy was from the beginning a constitutional monarchy, patterned after that of the United Kingdom.^[4] Raymond Fusilier wrote the Belgian regime of 1830 was also inspired by the French Constitution of the Kingdom of France (1791–1792), the United States Declaration of Independence of 1776, and the old political traditions of both Walloon and Flemish provinces.^[15] "It should be observed that all monarchies have suffered periods of change as a result of which the power of the sovereign was reduced, but for the most part those periods occurred before the development of the system of constitutional monarchy and were steps leading to its establishment."^[4] The characteristic evidence of this is in Great Britain where there was an evolution from the time when kings ruled through the agency of ministers to that time when ministers began to govern through the instrumentality of the Crown.

Unlike the British constitutional system, in Belgium "the monarchy underwent a belated evolution" which came "after the establishment of the constitutional monarchical system"^[16] because, in 1830–1831, an independent state, parliamentary system and monarchy were established simultaneously. Hans Daalder, professor of political science at the Rijksuniversiteit Leiden wrote: "Did such simultaneous developments not result in a possible failure to lay down the limits of the royal prerogatives with some precision—which implied that the view of the King as the Keeper of the Nation, with rights and duties of its own, retained legitimacy?"^[17]

For Raymond Fusilier, the Belgian monarchy had to be placed—at least in the beginning—between the regimes where the king rules and those in which the king does not rule but only reigns. The Belgian monarchy is closer to the principle "the King does not rule",^[18] but the Belgian kings were not only "at the head of the dignified part of the Constitution".^[19] The Belgian monarchy is not merely symbolic, because it participates in directing affairs of state insofar as the King's will coincides with that of the ministers, who alone bear responsibility for the policy of government.^[20] For Francis Delpérée, to reign does not only mean to preside over ceremonies but also to take a part in the running of the State.^[21] The Belgian historian Jean Stengers wrote that "some foreigners believe the monarchy is indispensable to national unity. That is very naive. He is only a piece on the chessboard, but a piece which matters".^[22]

The monarchs of Belgium originally belonged to the House of Saxe-Coburg and Gotha. The family name was changed by Albert I in 1920, to the House of Belgium^[23][24] and the armorial bearings of Saxony from the House of Saxe-Coburg-Gotha were removed from the Belgian royal coat of arms.^[24]

In 2019, the King Phillippe codified the coats of arms of himself and those of his family through a Royal Decree. The personal arms of the reigning monarch was modified to include the Saxonian escutcheon. The arms of other members of the royal family was similarly modified.^[25][26] The reinstatement of the shield of Saxe-Coburg-Gotha into the royal arms occurred shortly after the visit of the king and queen to the ancestral Friedenstein Castle. The latest royal decree therefore reverses previous changes made to the Royal versions of the coat arms which removed the armorial bearings of Saxony during the First World War.^[27] By including the three official languages in the motto it reflects his wish "to be the King of the whole Kingdom and of all Belgians".;.^[28][29] The national Coat of arms of Belgium remains unchanged, i.e. it does not incorporate the Saxon arms.

Since the 2017, Carnet Mondain, the title "Saxe-Cobourg-Gotha", along with "of Belgium" is again in use for all the descendants of Leopold I, with the exception of King Philippe, his wife, his sister and his brother who keep their title "of Belgium"; therefore the descendants of Astrid of Belgium do not bear this title, but that of "of Austria-Este" of their father.^[30][31][32]

For completeness, the family tree should include Princess Delphine of Belgium (born 1968). Princess Delphine is the legally acknowledged half-sibling of King Philippe of Belgium, and her children are also recognised as members of the royal family.

Leopold I[33] King of the Belgians 1790–1865 r.1831-1865

Leopold II[34] King of the Belgians 1835–1909 r.1865-1909

Philippe Count of Flanders 1837–1905

Albert I[35] King of the Belgians 1875–1934 r.1909-1934

Leopold III King of the Belgians 1901–1983 r.1934-1951

Baudouin[36] King of the Belgians 1930–1993 r.1951-1993

Albert II King of the Belgians b. 1934 r.1993–2013

Philippe[37] King of the Belgians b. 1960 r.2013-present

The proper title of the Belgian monarch is "King of the Belgians" rather than "King of Belgium" as is common for other monarchies throughout Europe. The title is linked to a concept of popular monarchy as defined by Kingsley Martin in his work The Evolution of Popular Monarchy, published in 1936. According to Martin, the term is meant to emphasize the bond and connection to the people of the land over the territory the state controls.^[38] His work further implies that such a monarch is de facto appointed by the people as a nominal figurehead rather than being an authoritarian ruler.^[38]

Belgium is the only extant European monarchy in which the heir to the throne does not ascend immediately upon the death or abdication of his or her predecessor. According to Article 91 of the Belgian constitution, the heir accedes to the throne only upon taking a constitutional oath before a joint session of the two Houses of Parliament.^[39] The joint session has to be held within ten days of the death or abdication of the previous monarch. The new Belgian monarch is required to take the Belgian constitutional oath, "I swear to observe the Constitution and the laws of the Belgian people, to maintain the national independence and the integrity of the territory," which is uttered in the three official languages: French, Dutch, and German.

Members of the Belgian royal family are often known by two names: a Dutch and a French one. For example, the current monarch is called 'Philippe' in French and 'Filip' in Dutch; the fifth King of the Belgians was 'Baudouin' in French and 'Boudewijn' in Dutch.

In contrast to King Philippe's title of "King of the Belgians", Princess Elisabeth is called "Princess of Belgium" as the title "Prince of the Belgians" does not exist. She is also Duchess of Brabant, the traditional title of the heir apparent to the Belgian throne. This title precedes the title "Princess of Belgium".

In the other official language of German, monarchs are usually referred to by their French names. The same is true for English with the exception of Leopold, where the accent is removed for the purpose of simplicity.

Because of the First World War and the resultant strong anti-German sentiment, the family name was changed in 1920, from Saxe-Coburg-Gotha to van België, de Belgique, or von Belgien ("of Belgium"), depending upon which of the country's three official languages (Dutch, French, and German) is in use. It is this family name which is used on the identity cards and in all official documents by Belgium's royalty (e.g. marriage licenses). In addition to this change of name, the armorial bearings of Saxony were removed from the Belgian royal coat of arms (see above). Other Coburgers from the multi-branched Saxe-Coburg family have also changed their name, such as George V, who adopted the family name of Windsor after the British royal family's place of residence.^[40] Only Simeon Sakskoburggotski kept his Saxony-Coburg family name, but he was ousted from the Bulgarian throne in 1946 at the age of nine.

Nevertheless, the Royal Decree published on 19 July and signed on 12 July 2019 by King Philip, reinstated the Saxonian escutcheon in the all royal versions of the family's coat of arms.^[25][41] The reinstatement of the Saxe-Coburg-Gotha main royal arms occurred shortly after the visit of King Philip and Queen Mathilde to the ancestral Friedenstein Castle.^{[citation needed]}

The Belgian monarchy symbolises and maintains a feeling of national unity by representing the country in public functions and international meetings.

In addition, the monarch has a number of responsibilities in the process of the formation of the Government. The procedure usually begins with the nomination of the "Informateur" by the monarch. After the general election the Informateur officially informs the monarch of the main political formations which may be available for governance. After this phase, the monarch can appoint another "informateur" or appoint a "Formateur", who will have the charge of forming a new government, of which he or she generally becomes the Prime Minister.

Article 37 of the Constitution of Belgium vests the "federal executive power" in the monarch. Under Section III, this power includes the appointment and dismissal of ministers, the implementation of the laws passed by the Federal Parliament, the submission of bills to the Federal Parliament and the management of international relations. The monarch sanctions and promulgates all laws passed by Parliament. In accordance with Article 106 of the Belgian Constitution, the monarch is required to exercise his powers through the ministers. His acts are not valid without the countersignature of the responsible minister, who in doing so assumes political responsibility for the act in question. This means that federal executive power is exercised in practice by the Federal Government, which is accountable to the Chamber of Representatives in accordance with Article 101 of the Constitution.

The monarch receives the prime minister at the Palace of Brussels at least once a week, and also regularly calls other members of the government to the palace in order to discuss political matters. During these meetings, the monarch has the right to be informed of proposed governmental policies, the right to advise, and the right to warn on any matter as the monarch sees fit. The monarch also holds meetings with the leaders of all the major political parties and regular members of parliament. All of these meetings are organised by the monarch's personal political cabinet which is part of the Royal Household.

The monarch is the Commander-in-Chief of the Belgian Armed Forces and makes appointments to the higher positions. The names of the nominees are sent to the monarch by the Ministry of Defence. The monarch's military duties are carried out with the help of the Military Household which is headed by a General office. Belgians may write to the monarch when they meet difficulties with administrative powers.

The monarch is also one of the three components of the federal legislative power, in accordance with the Belgian Constitution, together with the two chambers of the Federal Parliament: the Chamber of Representatives and the Senate. All laws passed by the Federal Parliament must be signed and promulgated by the monarch.

Previously, children of the King were entitled to a seat in the senate (Senator by right) when they were 18. This right was abolished in 2014 as part of the Sixth Belgian state reform.

The Inviolability of Monarchy is a legal principle in Belgium that protects the King or Queen from legal prosecution, civil or criminal, during their reign. This principle is enshrined in Article 88 of the Belgian Constitution.

According to this principle, the King or Queen cannot be held responsible for their actions as monarch, nor can they be subjected to legal proceedings during their reign. This is intended to ensure that the monarch can perform their duties without fear of political interference or retribution.

However, it is important to note that the principle of inviolability does not extend to the actions of the monarch outside of their official duties. If a monarch commits a crime or engages in unlawful activities outside of their role as head of state, they can still be held legally accountable for their actions.^[42]

In Belgium, the principle of inviolability is seen as an important safeguard for the constitutional monarchy, which is a key component of the country's political system. It is also seen as a way to ensure that the monarch can act as a unifying figure for the country, representing all Belgians regardless of political affiliation or ideology.

Overall, the principle of inviolability of the monarchy in Belgium is a key feature of the country's political system, designed to protect the monarch and preserve the stability of the constitutional monarchy.

The Court still keeps some old traditions, most famous is the tradition that the Reigning King of the Belgians becomes the godfather of a seventh son and the Queen the godmother of a seventh daughter.^[43] The child is then given the name of the Sovereign and receives a gift from the palace and Burgomaster of the city.^[44] Similar traditions are attached to the Russian Tsar and the President of Argentina.^[45] Another tradition is the centuries-old ceremonial welcome the new king receives in the country during the Joyous Entry; this tradition apparently dates back to the Dukes of Brabant.

Popular support for the monarchy had historically been higher in Flanders and lower in Wallonia. The generally pro-monarchy Catholic Party and later Christian Social Party dominated in Flanders, while the more industrialised Wallonia had more support for the Belgian Labour Party and later Socialist Party. For example, the 1950 referendum saw Flanders voting strongly in favour of King Leopold III returning, whereas Wallonia was largely against. However, in recent decades these roles have reversed, as religiosity in Flanders has decreased and the King is seen as protecting the country against (Flemish) separatism and the country's partition.^[46]

The King's Household (Dutch: Het Huis van de Koning, French: La Maison du Roi, German: Das Haus des Königs) was reorganised in 2006, and consists of seven autonomous departments and the Court's Steering Committee. Each Head of Department is responsible for his department and is accountable to the King.

The following departments currently make up the King's Household:

• the Department for Economic, Social and Cultural Affairs
• the King's Cabinet
• the King's Military Household
• the King's Civil List
• the Department for Foreign Relations
• the Department of the Protocol of the Court
• the Department of Petitions

The King's Chief of Cabinet is responsible for dealing with political and administrative matters and for maintaining the relations with the government, trade unions and industrial circles. In relation to the King, the Chief assists in keeping track of current events; informs regarding all aspects of Belgian life; proposes and prepares audiences; assists in preparing speeches and informs the King about developments in international affairs. The Chief of Cabinet is assisted by the Deputy and Legal Adviser, the Press Adviser and the Archivist. The incumbent Chief of Cabinet is Baron Frans Van Daele, former Chief of Cabinet of President of the European Council Herman Van Rompuy.

The Head of the King's Military Household assists the King in fulfilling his duties in the field of defence. He informs the King about all matters of security, defence policy, the views of Belgium's main partner countries and all aspects of the Belgian Armed Forces. He organises the King's contacts with the Armed Forces, advises in the fields of scientific research and police and coordinates matters with patriotic associations and former service personnel. The Military Household is also responsible for managing the Palace's computer system. The Head of the Military Household is a General Officer, currently General Jef Van den put and assisted by an adviser, currently Lieutenant-Colonel Aviator Serge Vassart. The King's Aides-de-Camp and the King's Equerries are also attached to the Military Household.

The King's aides-de-camp are senior officers chosen by the monarch and charged with carrying out certain tasks on his behalf, such as representing him at events. The King's Equerries are young officers who take turns preparing the King's activities, informing him about all the aspects that may be important to him and providing any other useful services such as announcing visitors. The equerry accompanies the King on his trips except for those of a strictly private nature.

The Intendant of the King's Civil List is responsible for managing the material, financial and human resources of the King's Household. He is assisted by the Commandant of the Royal Palaces, the Treasurer of the King's Civil List and the Civil List Adviser. The Intendant of the Civil List also advises the King in the field of energy, sciences and culture and administers the King's hunting rights. The Commandant of the Royal Palaces is mainly in charge, in close cooperation with the Chief of Protocol, of the logistic support of activities and the maintenance and cleaning of the Palaces, Castles and Residences. He is also Director of the Royal Hunts.

The Chief of Protocol is charged with organising the public engagements of the King and the Queen, such as audiences, receptions and official banquets at the Palace, as well as formal activities outside of the Palace. He is assisted by the Queen's Secretary, who is mainly responsible for proposing and preparing the Queen's audiences and visits.

The Head of the Department for Economic, Social and Cultural Affairs advises the King in the economic, social and cultural fields. He is also responsible for providing coordination between the various Households and Services and for organising and minuting the meetings of the Steering Committee. The Head of the Department for Foreign Relations informs the King of developments in international policy, assists the King from a diplomatic viewpoint on royal visits abroad and prepares the King's audiences in the international field. He is also responsible for maintaining contacts with foreign diplomatic missions. The Head of the Department of Petitions is charged with processing petitions and requests for social aid addressed the King, the Queen or other members of the royal family. He is also responsible for the analysis and coordination of royal favours and activities relating to jubilees, and advises the King in the fields for which he is responsible.

For the personal protection of the King and the royal family, as well as for the surveillance of the royal estates, the Belgian Federal Police at all times provides a security detail to the Royal Palace, commanded by a chief police commissioner. The other members of the royal family have a service at their disposal.

Belgian royal family
The King The Queen The Duchess of Brabant Prince Gabriel Prince Emmanuel Princess Eléonore
King Albert II Queen Paola Princess Astrid Prince Lorenz Prince Amedeo Princess Elisabetta Princess Maria Laura Prince Joachim Princess Luisa Maria Princess Laetitia Maria Prince Laurent Princess Claire Princess Louise Prince Nicolas Prince Aymeric Princess Delphine Princess Joséphine Prince Oscar
Princess Léa Princess Marie-Christine, Mrs Gourges Princess Marie-Esméralda, Lady Moncada

Members of the Belgian royal family, other than the monarch, hold the title of Prince or Princess of Belgium, with the style of Royal Highness. Prior to the First World War, they used the additional titles of Prince or Princess of Saxe-Coburg and Gotha and Duke or Duchess of Saxony, as members of the House of Wettin.

The title Prince or Princess of Belgium is a specific noble title within the Belgian nobility reserved for members of the Belgian royal family. Originally the Royal Decree of 14 March 1891, reserved this title for all persons descending in the direct male line from king Leopold I. The royal decree also automatically granted the title to the princesses who joined the Belgian royal family by their marriage to a Prince of Belgium. This royal decree was amended by the Royal Decree of 2 December 1991, which reserved the title for the direct male and female descendants of Albert II and abolished the Salic Law with regards to its granting. The Royal Decree of 12 November 2015, published in the Belgian official journal on 24 November 2015, abolished the aforementioned Royal Decree of 1991, and restricts new grants of this title to the children and grandchildren of the reigning monarch, and to the children and grandchildren of the crownprince(ss). The spouse of a Prince or Princess of Belgium is no longer automatically granted the title but he or she can still be granted the title by royal decree on an individual basis.^[47] Prior to this, all descendants of Albert II were entitled to the title of prince or princess.^[48]

King Philippe (born 15 April 1960) is King of the Belgians. He married, on 4 December 1999, Jonkvrouwe Mathilde d'Udekem d'Acoz, who was created Princess Mathilde of Belgium a day before their wedding, after which she also took the title Duchess of Brabant as the wife of the Duke of Brabant, and became, from 21 July 2013, Queen Mathilde of the Belgians. She is a daughter of Patrick d'Udekem d'Acoz (made a count prior to the wedding) and his wife, Countess Anna Maria Komorowska. They have four children:

• Princess Elisabeth, Duchess of Brabant, who will inherit the throne after her father due to a 1991 act of succession which established absolute (gender-neutral) primogeniture, altering the order of succession from "eldest son" to "eldest child".
• Prince Gabriel of Belgium
• Prince Emmanuel of Belgium
• Princess Eléonore of Belgium

• King Albert II (born 6 June 1934). He was the king between 1993 (following the death of his brother King Baudouin) and 21 July 2013, the Belgian National Day, when he abdicated in favour of his son Philippe, Duke of Brabant, because of ill health. On 2 July 1959, he married Donna Paola Ruffo di Calabria (born 11 September 1937) in Brussels, who became HRH Princess Paola of Belgium, Princess of Liège, and after 1993, became Queen Paola of the Belgians. She is the daughter of Fulco VIII, Prince Ruffo di Calabria, 6th Duke of Guardia Lombarda (1884–1946) and his wife, Luisa Gazelli dei Conti di Rossana e di Sebastiano (1896–1989). Together they have three children, the current king (see above), a daughter and another son:
  • Princess Astrid, Archduchess of Austria-Este (born 5 June 1962). She is the wife of Prince Lorenz of Belgium, Archduke of Austria-Este, Prince Royal of Hungary and Bohemia, whom she married on 22 September 1984 and who was created a prince of Belgium in 1995. Princess Astrid, with her own descendants, is before her brother Laurent in the order of succession to the Belgian throne, due to the 1991 act of succession mentioned above. They have five children:
    • Prince Amedeo of Belgium, Archduke of Austria-Este. He married Elisabetta Maria Rosboch von Wolkenstein on 5 July 2014. They have two daughters and one son:
      • Archduchess Anna Astrid of Austria-Este
      • Archduke Maximilian of Austria-Este
      • Archduchess Alix of Austria-Este
    • Princess Maria Laura of Belgium, Archduchess of Austria-Este. She married William Isvy on 10 September 2022.
    • Prince Joachim of Belgium, Archduke of Austria-Este
    • Princess Luisa Maria of Belgium, Archduchess of Austria-Este
    • Princess Laetitia Maria of Belgium, Archduchess of Austria-Este
  • Prince Laurent of Belgium (born 19 October 1963). He married Claire Coombs, an Anglo-Belgian former land surveyor, on 12 April 2003, who was created HRH Princess Claire of Belgium 11 days before their wedding. They have one daughter and two sons:
    • Princess Louise of Belgium
    • Prince Nicolas of Belgium
    • Prince Aymeric of Belgium
  • Princess Delphine of Belgium (born 22 February 1968). She is the non-marital daughter of King Albert II by his former mistress, Baroness Sybille de Selys Longchamps. After winning a paternity case in 2020, she and her children were elevated to the rank of prince/princess of Belgium by a court ruling on 1 October 2020. She has been in a relationship with James O'Hare since 2000. They have one daughter and one son:
    • Princess Joséphine of Belgium
    • Prince Oscar of Belgium

• Princess Léa of Belgium (born 2 December 1951). She is the widow of Prince Alexandre of Belgium, half-brother of both Kings Baudouin and Albert II, and half-uncle of King Philippe.
• Princess Marie-Christine, Mrs Gourgues (born 6 February 1951). She is the eldest daughter of Leopold III and Lilian, Princess of Réthy, half-sister of both Kings Baudouin and Albert II and half-aunt of King Philippe. Her first marriage, to Paul Drucker (Toronto, Ontario, 1 November 1937 – 1 April 2008) in Coral Gables, Miami-Dade County, Florida, on 23 May 1981, lasted 40 days (though they weren't formally divorced till 1985); she subsequently married Jean-Paul Gourges in Los Angeles, California, on 28 September 1989.
• Princess Marie-Esméralda, Lady Moncada (born 30 September 1956). She is the youngest daughter of Leopold III and Lilian, Princess of Réthy, half-sister of both Kings Baudouin and Albert II and half-aunt of King Philippe. Princess Marie-Esméralda is a journalist, writing under the name Esméralda de Réthy. She married Sir Salvador Moncada, a Honduran-British pharmacologist, in London on 4 April 1998. They have a daughter, Alexandra Leopoldine (born in London on 4 August 1998), and a son, Leopoldo Daniel (born in London on 21 May 2001).

• Crown Prince Louis Philippe (eldest son of Leopold I, died in 1834);
• Queen Louise-Marie (second wife of Leopold I, died in 1850);
• King Leopold I (second son of Prince Francis, died in 1865);
• Emperor Maximilian I of Mexico (husband of Princess Charlotte, daughter of Leopold I, died in 1867);
• Prince Leopold, Duke of Brabant (eldest son of Leopold II, died in 1869);
• Princess Joséphine-Marie (second daughter of Prince Philippe, third son of Leopold I, died in 1871);
• Crown Prince Rudolf of Austria (first husband of Princess Stéphanie, daughter of Leopold II, died in 1889);
• Prince Baudouin (eldest son of Prince Philippe, third son of Leopold I, died in 1891);
• Queen Marie Henriette (wife of Leopold II, died in 1902);
• Prince Philippe, Count of Flanders (third son of Leopold I, died in 1905);
• King Leopold II (second son of Leopold I, died in 1909);
• Princess Marie, Countess of Flandres (widow of Prince Philippe, third son of Leopold I, died in 1912);
• Prince Karl Anton of Hohenzollern (husband of Princess Joséphine Caroline, sister of Albert I, died in 1919);
• Prince Philipp of Saxe-Coburg and Gotha, Duke in Saxony (husband of Princess Louise, daughter of Leopold II, died in 1921);
• Princess Louise of Saxe-Coburg and Gotha, Duchess in Saxony (eldest daughter of Leopold II, died in 1924);
• Prince Victor, Prince Napoléon (husband of Princess Clémentine, daughter of Leopold II, died in 1926);
• Empress Carlota of Mexico (eldest daughter of Leopold I, died in 1927);
• Prince Emmanuel, Duke of Vendôme and Alençon (husband of Princess Henriette, sister of Albert I, died in 1931);
• King Albert I (youngest son of Prince Philippe, third son of Leopold I, died in 1934);
• Queen Astrid (first wife of Leopold III, died in 1935);
• Crown Princess Stéphanie of Austria, Princess Lónyai de Nagy-Lónya (eldest daughter of Leopold II, died in 1945);
• Prince Elemér Lónyai de Nagy-Lónya (widower of Princess Stéphanie, daughter of Leopold II, died in 1946);
• Princess Henriette, Duchess of Vendôme and Alençon (eldest daughter of Prince Philippe, third son of Leopold I, died in 1948);
• Clémentine, Princess Napoléon (youngest daughter of Leopold II, died in 1955);
• Princess Joséphine-Caroline of Hohenzollern (third daughter of Prince Philippe, son of Leopold I, died in 1958);
• Queen Elisabeth (widow of Albert I, died in 1965);
• King Umberto II of Italy (husband of Princess Maria-José, daughter of Albert I, died in 1983);
• Prince Regent Charles, Count of Flanders (second son of Albert I, died in 1983);
• King Leopold III (eldest son of Albert I, died in 1983);
• King Baudouin I (eldest son of Leopold III, died in 1993);
• Queen Marie-José of Italy (eldest daughter of Albert I, died in 2001);
• Lilian, Princess of Réthy (second wife of Leopold III, died in 2002);
• Grand Duchess Joséphine-Charlotte of Luxembourg (eldest daughter of Leopold III, died in 2005);
• Prince Alexandre (third son of Leopold III, died in 2009);
• Queen Fabiola (widow of Baudouin I, died in 2014);
• Grand Duke Jean of Luxembourg (widower of Princess Joséphine-Charlotte, daughter of Leopold III, died in 2019);

• Princess Louise d'Orléans (second wife of King Leopold I)
• Archduchess Marie Henriette of Austria (wife of King Leopold II)
• Duchess Elisabeth in Bavaria (wife of King Albert I)
• Princess Astrid of Sweden (first wife of King Leopold III)
• Mary Lilian Baels* (second wife of King Leopold III)
• Doña Fabiola de Mora y Aragón (wife of King Baudouin)
• Donna Paola Ruffo di Calabria (wife of King Albert II)
• Jonkvrouwe Mathilde d'Udekem d'Acoz (wife of King Philippe)

• List of Belgian monarchs
• List of heirs to the Belgian throne
• Line of succession to the Belgian throne
• Crown Council of Belgium

• Aronson, Theo. The Coburgs of Belgium (Cassell, 1969)
• Hindley, Geoffrey. The Royal Families of Europe (Constable, 2000)

• The Belgian monarchy – official site of the Belgian royal family
• The Belgian monarchy Archived 9 March 2012 at the Wayback Machine – official brochure of the Belgium government
• What role for a Belgian monarch? – website Expatica.com