These are the individuals who, at any given time, were considered next in line to inherit the throne of Monaco, should the incumbent monarch die. Those who actually succeeded (at any time) are shown in bold. Stillborn children and infants surviving less than a month are not shown.

This list begins with the sole reign of Catalan, Lord of Monaco, whose father Jean (or Giovanni) I first set out a law of succession in his will in 1454. Until 1427 Monaco was effectively a condominium with up to three rulers simultaneously; after Jean I became sole ruler he sought to keep the throne for one person, of the Grimaldi family. This succession included the stipulation that while a woman could inherit if there were no male heirs in her immediate family, she must marry a Grimaldi cousin to keep the inheritance in the family. The first Lady of Monaco, Claudine Grimaldi

Claudine, Lady of Monaco

Claudine Grimaldi was Lady regnant of Monaco between 1457 and 1458, and then Lady consort of Monaco as spouse of Lord Lambert of Monaco.- Biography :Claudine was the only child of her father, Catalan Grimaldi...

, abdicated in favour of her cousin and later married him; a later Princess of Monaco, however, would defy this law. It was ignored, however, and the throne continued to pass to their descendants, who adopted the name Grimaldi in place of their own.

Lords of Monaco (1454 to 1612)

Claudine Grimaldi

Claudine, Lady of Monaco

Claudine Grimaldi was Lady regnant of Monaco between 1457 and 1458, and then Lady consort of Monaco as spouse of Lord Lambert of Monaco.- Biography :Claudine was the only child of her father, Catalan Grimaldi...

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Heir	Relationship to Monarch	Became heir	Reason	Ceased to be heir	Reason	Next in succession	Monarch
only daughter	8 May 1454	father became Lord	July 1457	became Lady	Lamberto Grimaldi Lamberto Grimaldi Lamberto Grimaldi was a Lord of Monaco . He was married to his cousin Claudine Grimaldi in 1465 in order to secure the Grimaldi inheritance of Monaco which by the small state's constitution could only pass to male heirs... cousin	Catalan
Lamberto Grimaldi Lamberto Grimaldi Lamberto Grimaldi was a Lord of Monaco . He was married to his cousin Claudine Grimaldi in 1465 in order to secure the Grimaldi inheritance of Monaco which by the small state's constitution could only pass to male heirs...	cousin	July 1457	cousin became Lady	1458	became Lord	Gaspare Grimaldi d'Antibes brother	Claudine Claudine, Lady of Monaco Claudine Grimaldi was Lady regnant of Monaco between 1457 and 1458, and then Lady consort of Monaco as spouse of Lord Lambert of Monaco.- Biography :Claudine was the only child of her father, Catalan Grimaldi...
Gaspare Grimaldi d'Antibes	brother	1458	brother became Lord	1468	son born to Lord	Nicola Grimaldi d'Antibes brother	Lamberto Lamberto Grimaldi Lamberto Grimaldi was a Lord of Monaco . He was married to his cousin Claudine Grimaldi in 1465 in order to secure the Grimaldi inheritance of Monaco which by the small state's constitution could only pass to male heirs...
Jean Grimaldi Jean II, Lord of Monaco Jean II/Giovanni II, was Lord of Monaco from March 1494 until his death. He was the eldest son of Lambert Grimaldi and Claudine Grimaldi .During his 11 year reign, he pursued the politics of his father...	eldest son	1468	born	March 1494	became Lord	Gaspard Grimaldi d'Antibes 1468–1482, uncle
						Augustine Grimaldi Augustine Grimaldi Augustine Grimaldi was Regent of Monaco , Bishop of Grasse, Abbot of Lérins, and founder of the village of Valbonne.-Family:... 1482–1494, brother
Augustine Grimaldi Augustine Grimaldi Augustine Grimaldi was Regent of Monaco , Bishop of Grasse, Abbot of Lérins, and founder of the village of Valbonne.-Family:...	brother	1494	brother became Lord	before 1505	became abbot and bishop	Lucien Grimaldi Lucien, Lord of Monaco Lucien became Lord of Monaco on 11 October 1505, having murdered his predecessor and brother, Jean II, and held that sovereignty until his death.-Family and Marriage:... brother	Jean II Jean II, Lord of Monaco Jean II/Giovanni II, was Lord of Monaco from March 1494 until his death. He was the eldest son of Lambert Grimaldi and Claudine Grimaldi .During his 11 year reign, he pursued the politics of his father...
Lucien Grimaldi Lucien, Lord of Monaco Lucien became Lord of Monaco on 11 October 1505, having murdered his predecessor and brother, Jean II, and held that sovereignty until his death.-Family and Marriage:...	brother	before 1505	brother gave up his succession rights	1505	became Lord	Nicholas II, Lord d'Antibes first cousin
Nicholas II, Lord d'Antibes	first cousin	1505	cousin became Lord	1519	died	Gaspard Grimaldi d'Antibes son	Lucien Lucien, Lord of Monaco Lucien became Lord of Monaco on 11 October 1505, having murdered his predecessor and brother, Jean II, and held that sovereignty until his death.-Family and Marriage:...
Gaspard II, Lord d'Antibes	first cousin once removed	1519	father died	16 December 1522	son born to Lord	Renato Grimaldi d'Antibes son
Honoré Grimaldi Honoré I, Lord of Monaco Honoré I was Lord of Monaco from August 22, 1523 to October 7, 1581.Honoré was the youngest child of Lucien Grimaldi and Jeanne de Pontevès-Cabanes. He became Lord of Monaco at the age of 9 months, upon the assassination of his father on August 22, 1523...	eldest son	16 December 1522	born	22 August 1523	became Lord	Gaspard II, Lord d'Antibes second cousin
Gaspard II, Lord d'Antibes	second cousin	22 August 1523	cousin became Lord	1555	son born to Lord	Renato Grimaldi d'Antibes	Honoré I Honoré I, Lord of Monaco Honoré I was Lord of Monaco from August 22, 1523 to October 7, 1581.Honoré was the youngest child of Lucien Grimaldi and Jeanne de Pontevès-Cabanes. He became Lord of Monaco at the age of 9 months, upon the assassination of his father on August 22, 1523...
Charles Grimaldi Charles II, Lord of Monaco Charles II was Lord of Monaco from October 7, 1581 to May 17, 1589.Charles was the eldest son of Honoré I and Isabella Grimaldi...	eldest son	1555	born	7 October 1581	became Lord	Gaspard II, Lord d'Antibes 1555–1557, second cousin once removed
						François Grimaldi 1557–1581, brother
François Grimaldi	brother	7 October 1581	brother became Lord	1586	died	Hercule Grimaldi Hercule, Lord of Monaco Ercole was Lord of Monaco from May 17, 1589 to November 29, 1604.Ercole was the youngest of four sons of Honoré I and Isabella Grimaldi. His eldest brother Charles II became Lord of Monaco on the death of their father in 1581. Ercole's two elder brothers Francois and Horace died in childhood... brother	Charles II Charles II, Lord of Monaco Charles II was Lord of Monaco from October 7, 1581 to May 17, 1589.Charles was the eldest son of Honoré I and Isabella Grimaldi...
Hercule Grimaldi Hercule, Lord of Monaco Ercole was Lord of Monaco from May 17, 1589 to November 29, 1604.Ercole was the youngest of four sons of Honoré I and Isabella Grimaldi. His eldest brother Charles II became Lord of Monaco on the death of their father in 1581. Ercole's two elder brothers Francois and Horace died in childhood...	brother	1586	brother died	17 May 1589	became Lord	Renato, Lord d'Antibes third cousin
Renato, Lord d'Antibes	third cousin	17 May 1589	cousin became Lord	1594	died	Honoré Grimaldi d'Antibes son	Hercule Hercule, Lord of Monaco Ercole was Lord of Monaco from May 17, 1589 to November 29, 1604.Ercole was the youngest of four sons of Honoré I and Isabella Grimaldi. His eldest brother Charles II became Lord of Monaco on the death of their father in 1581. Ercole's two elder brothers Francois and Horace died in childhood...
Honoré I, Lord d'Antibes	third cousin once removed	1594	father died	24 December 1597	son born to Lord	Alexandre Grimaldi d'Antibes brother
Honoré Grimaldi Honoré II, Prince of Monaco Honoré II was Sovereign Prince of Monaco. He was the first to be called Prince, but started his reign as Lord of Monaco....	eldest son	24 December 1597	born	29 November 1604	became Lord	Giovanna Grimaldi sister

Princes of Monaco (1612–present)

Heir	Relationship to Monarch	Became heir	Reason	Ceased to be heir	Reason	Next in succession	Monarch
HSH Princess Giovanna Grimaldi	sister	29 November 1604	brother became Lord	26 December 1623	son born to Prince	Honoré I, Lord d'Antibes 1604–1618, fourth cousin	Honoré II Honoré II, Prince of Monaco Honoré II was Sovereign Prince of Monaco. He was the first to be called Prince, but started his reign as Lord of Monaco....
						Jean-Henri, Lord d'Antibes 1618–1623, fourth cousin once removed
HSH Prince Ercole, Marquis of Baux Ercole, Marquis of Baux Ercole Grimaldi, Marquis of Baux was a member of the House of Grimaldi and heir apparent of his father Honoré II of Monaco.-Biography:...	eldest son	26 December 1623	born	2 August 1651	died	Giovanna Grimaldi 1623–1642, aunt
						HSH Prince Louis Grimaldi Louis I, Prince of Monaco Louis I, Prince of Monaco was Prince of Monaco from 1662 until 1701.Louis Grimaldi was the elder son of Prince Hercule of Monaco and Maria Aurelia Spinola.... 1642–1651, son
HSH Prince Louis, Marquis of Baux Louis I, Prince of Monaco Louis I, Prince of Monaco was Prince of Monaco from 1662 until 1701.Louis Grimaldi was the elder son of Prince Hercule of Monaco and Maria Aurelia Spinola....	grandson	2 August 1651	father died	10 January 1662	became Prince	HSH Princess Maria Ippolita Grimaldi 1651–1661, sister
						HSH Prince Antoine Grimaldi 1661–1662, son
HSH Prince Antoine, Marquis of Baux	eldest son	10 January 1662	father became Prince	3 January 1701	became Prince	HSH Princess Maria Teresa Grimaldi 1662–1669, sister	Louis I Louis I, Prince of Monaco Louis I, Prince of Monaco was Prince of Monaco from 1662 until 1701.Louis Grimaldi was the elder son of Prince Hercule of Monaco and Maria Aurelia Spinola....
						HSH Prince François Grimaldi 1669–1691, brother
						HSH Princess Caterina Charlotte Grimaldi 1691–1696, daughter
						HSH Prince François Grimaldi 1696–1697, brother
						HSH Princess Louise Hippolyte Grimaldi 1697–1701, daughter
HSH Louise Hippolyte, Hereditary Princess of Monaco	eldest daughter	3 January 1701	father became Prince	20 February 1731	became Princess	HSH Princess Elisabeth Grimaldi 1701–1702, sister	Antoine I
						HSH Princess Margherita Grimaldi 1702–1717, sister
						HSH Prince Antoine, Marquis of Baux 1717–1718, son
						HSH Princess Margherita Grimaldi 1718–1719, sister
						HSH Princess Charlotte Grimaldi 1719–1720, daughter
						HSH Prince Honoré, Marquis of Baux Honoré III, Prince of Monaco Honoré III ruled as Prince of Monaco and was Duke of Valentinois for almost sixty years from 1733 to 1793... 1720–1731, son
HSH Honoré, Hereditary Prince of Monaco Honoré III, Prince of Monaco Honoré III ruled as Prince of Monaco and was Duke of Valentinois for almost sixty years from 1733 to 1793...	eldest son	20 February 1731	mother became Princess	7 November 1733	became Prince	HSH Prince Charles Grimaldi brother	Louise Hippolyte
							Jacques I Jacques I, Prince of Monaco Jacques Goyon de Matignon was count of Thorigny, Prince of Monaco as Jacques I and the fourth Duke of Valentinois from 1731 until 1733.-Biography:...
HSH Prince Charles Grimaldi	brother	7 November 1733	brother became Prince	24 August 1749	died	HSH Prince Charles-Maurice, comte de Valentinois brother	Honoré III Honoré III, Prince of Monaco Honoré III ruled as Prince of Monaco and was Duke of Valentinois for almost sixty years from 1733 to 1793...
HSH Prince Charles-Maurice, comte de Valentinois	brother	24 August 1749	brother died	17 May 1758	son born to Prince	no further eligible heirs of the House of Grimaldi House of Grimaldi The House of Grimaldi is associated with the history of the Republic of Genoa and of the Principality of Monaco.-History:The Grimaldi family descends from Grimaldo, a Genoese statesman at the time of the early Crusades. He might have been a son of Otto Canella, a consul of the Republic of Genoa in...
HSH Prince Honoré, Marquis of Baux Honoré IV, Prince of Monaco Honoré IV was Prince of Monaco and Duke of Valentinois from 12 March 1795 to 16 February 1819. He was the son of Prince Honoré III by his wife, Maria Caterina Brignole, a Genoese noblewoman...	eldest son	17 May 1758	born	21 March 1795	became Prince	HSH Prince Charles-Maurice, comte de Valentinois 1758–1763, uncle
						HSH Prince Joseph Grimaldi Prince Joseph of Monaco Prince Joseph of Monaco was a Monagasque prince and brother of Honoré IV, Prince of Monaco.-Biography:... 1763–1778, brother
						HSH Prince Honoré Grimaldi Honoré V, Prince of Monaco Honoré V was Prince of Monaco and Duke of Valentinois. He was born Honoré Gabriel Grimaldi, the first son of Honoré IV of Monaco and Louise d'Aumont... 1778–1795, son
HSH Prince Honoré, Marquis of Baux Honoré V, Prince of Monaco Honoré V was Prince of Monaco and Duke of Valentinois. He was born Honoré Gabriel Grimaldi, the first son of Honoré IV of Monaco and Louise d'Aumont...	eldest son	21 March 1795	father became Prince	16 February 1816	became Prince	HSH Prince Florestan Grimaldi Florestan I, Prince of Monaco Florestan I, Prince of Monaco was Prince of Monaco and Duke of Valentinois from 2 October 1841 until his death... brother	Honoré IV Honoré IV, Prince of Monaco Honoré IV was Prince of Monaco and Duke of Valentinois from 12 March 1795 to 16 February 1819. He was the son of Prince Honoré III by his wife, Maria Caterina Brignole, a Genoese noblewoman...
HSH Prince Florestan Grimaldi Florestan I, Prince of Monaco Florestan I, Prince of Monaco was Prince of Monaco and Duke of Valentinois from 2 October 1841 until his death...	brother	16 February 1816	brother became Prince	2 October 1841	became Prince	no further eligible heirs of the House of Grimaldi	Honoré V Honoré V, Prince of Monaco Honoré V was Prince of Monaco and Duke of Valentinois. He was born Honoré Gabriel Grimaldi, the first son of Honoré IV of Monaco and Louise d'Aumont...
						HSH Prince Charles Grimaldi Charles III, Prince of Monaco Charles III was Prince of Monaco and Duke of Valentinois from 20 June 1856 to his death. He was the founder of the famous casino in Monte Carlo, as his title in Monegasque and Italian was Carlo III.-Birth:... 1818–1841, son
HSH Prince Charles, Marquis of Baux Charles III, Prince of Monaco Charles III was Prince of Monaco and Duke of Valentinois from 20 June 1856 to his death. He was the founder of the famous casino in Monte Carlo, as his title in Monegasque and Italian was Carlo III.-Birth:...	eldest son	2 October 1841	father became Prince	20 June 1856	became Prince	HSH Princess Florestine Grimaldi Princess Florestine of Monaco Princess Florestine Gabrielle Antoinette of Monaco was the youngest child and only daughter of Florestan I, Prince of Monaco and his wife Maria Caroline Gibert de Lametz... 1841–1848, sister	Florestan I Florestan I, Prince of Monaco Florestan I, Prince of Monaco was Prince of Monaco and Duke of Valentinois from 2 October 1841 until his death...
						HSH Prince Albert Grimaldi Albert I, Prince of Monaco Albert I was Prince of Monaco and Duke of Valentinois from 10 September 1889 until his death.-Early life:... 1848–1856, son
HSH Albert, Hereditary Prince of Monaco Albert I, Prince of Monaco Albert I was Prince of Monaco and Duke of Valentinois from 10 September 1889 until his death.-Early life:...	eldest son	20 June 1856	father became Prince	10 September 1889	became Prince	HSH Princess Florestine, Duchess of Urach Princess Florestine of Monaco Princess Florestine Gabrielle Antoinette of Monaco was the youngest child and only daughter of Florestan I, Prince of Monaco and his wife Maria Caroline Gibert de Lametz... 1856–1870, aunt	Charles III Charles III, Prince of Monaco Charles III was Prince of Monaco and Duke of Valentinois from 20 June 1856 to his death. He was the founder of the famous casino in Monte Carlo, as his title in Monegasque and Italian was Carlo III.-Birth:...
						Prince Louis Grimaldi Louis II, Prince of Monaco Louis II was Prince of Monaco and Duke of Valentinois from 27 June 1922 until 9 May 1949.-Early years:Born Louis Honoré Charles Antoine Grimaldi in Baden-Baden, Germany, he was the only child of Prince Albert I of Monaco , and Lady Mary Victoria Hamilton... 1870–1889, son
Louis, Hereditary Prince of Monaco Louis II, Prince of Monaco Louis II was Prince of Monaco and Duke of Valentinois from 27 June 1922 until 9 May 1949.-Early years:Born Louis Honoré Charles Antoine Grimaldi in Baden-Baden, Germany, he was the only child of Prince Albert I of Monaco , and Lady Mary Victoria Hamilton...	eldest son	10 September 1889	father became Prince	26 June 1922	became Prince	Princess Florestine, Duchess of Urach Princess Florestine of Monaco Princess Florestine Gabrielle Antoinette of Monaco was the youngest child and only daughter of Florestan I, Prince of Monaco and his wife Maria Caroline Gibert de Lametz... 1889–1897, great-aunt	Albert I Albert I, Prince of Monaco Albert I was Prince of Monaco and Duke of Valentinois from 10 September 1889 until his death.-Early life:...
						HSH Prince Wilhelm, Duke of Urach Mindaugas II of Lithuania Prince Wilhelm of Urach, Count of Württemberg, 2nd Duke of Urach was a German prince who was elected King of Lithuania with the regnal name Mindaugas II on 11 July 1918... 1897–1919, first cousin once removed
						HSH Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois , was the daughter of Louis II, Prince of Monaco, and the mother of Prince Rainier III... 1919–1922, (legitimated) daughter
HSH Charlotte, Hereditary Princess of Monaco Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois , was the daughter of Louis II, Prince of Monaco, and the mother of Prince Rainier III...	eldest daughter	26 June 1922	father became Prince	30 May 1944	renounced her rights	HSH Princess Antoinette Grimaldi Princess Antoinette, Baroness of Massy Princess Antoinette of Monaco, Countess of Polignac, Baroness of Massy was a non-dynastic member of the princely family of Monaco and the elder sister of Prince Rainier III and aunt of Albert II, Prince of Monaco... 1922–1923, daughter	Louis II Louis II, Prince of Monaco Louis II was Prince of Monaco and Duke of Valentinois from 27 June 1922 until 9 May 1949.-Early years:Born Louis Honoré Charles Antoine Grimaldi in Baden-Baden, Germany, he was the only child of Prince Albert I of Monaco , and Lady Mary Victoria Hamilton...
						HSH Prince Rainier Grimaldi Rainier III, Prince of Monaco Rainier III, Prince of Monaco , styled His Serene Highness The Sovereign Prince of Monaco, ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs of the 20th century.Though he was best known outside of Europe for having married American... 1923–1944, son
HSH Rainier, Hereditary Prince of Monaco Rainier III, Prince of Monaco Rainier III, Prince of Monaco , styled His Serene Highness The Sovereign Prince of Monaco, ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs of the 20th century.Though he was best known outside of Europe for having married American...	grandson	30 May 1944	mother ceded her rights	9 May 1949	became Prince	HSH Princess Antoinette Grimaldi Princess Antoinette, Baroness of Massy Princess Antoinette of Monaco, Countess of Polignac, Baroness of Massy was a non-dynastic member of the princely family of Monaco and the elder sister of Prince Rainier III and aunt of Albert II, Prince of Monaco... sister
HSH Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois , was the daughter of Louis II, Prince of Monaco, and the mother of Prince Rainier III...	mother	9 May 1949	son became Prince	23 January 1957	daughter born to Prince	HSH Princess Antoinette Grimaldi Princess Antoinette, Baroness of Massy Princess Antoinette of Monaco, Countess of Polignac, Baroness of Massy was a non-dynastic member of the princely family of Monaco and the elder sister of Prince Rainier III and aunt of Albert II, Prince of Monaco...	Rainier III Rainier III, Prince of Monaco Rainier III, Prince of Monaco , styled His Serene Highness The Sovereign Prince of Monaco, ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs of the 20th century.Though he was best known outside of Europe for having married American...
HSH Caroline, Hereditary Princess of Monaco Caroline, Princess of Hanover Caroline, Princess of Hanover, Hereditary Princess of Monaco , formally styled Her Royal Highness The Princess of Hanover , has been heiress presumptive to the throne of Monaco since 2005, a position which she previously held from 1957 to 1958.She is the wife of...	eldest daughter	23 January 1957	born	14 March 1958	son born to Prince	HSH Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois Princess Charlotte, Duchess of Valentinois , was the daughter of Louis II, Prince of Monaco, and the mother of Prince Rainier III... grandmother
HSH Albert, Hereditary Prince of Monaco Albert II, Prince of Monaco Albert II, Sovereign Prince of Monaco is the head of the House of Grimaldi and the ruler of the Principality of Monaco. He is the son of Rainier III, Prince of Monaco, and the American actress Grace Kelly...	eldest son	14 March 1958	born	6 April 2005	became Prince	HSH Princess Caroline Grimaldi Caroline, Princess of Hanover Caroline, Princess of Hanover, Hereditary Princess of Monaco , formally styled Her Royal Highness The Princess of Hanover , has been heiress presumptive to the throne of Monaco since 2005, a position which she previously held from 1957 to 1958.She is the wife of... sister
HRH Caroline, Princess of Hanover, Hereditary Princess of Monaco Caroline, Princess of Hanover Caroline, Princess of Hanover, Hereditary Princess of Monaco , formally styled Her Royal Highness The Princess of Hanover , has been heiress presumptive to the throne of Monaco since 2005, a position which she previously held from 1957 to 1958.She is the wife of...	elder sister	6 April 2005	brother became Prince	incumbent		Andrea Casiraghi Andrea Casiraghi Andrea Albert Pierre Casiraghi is the first of three children born to Caroline, Princess of Hanover, and her second husband, Stefano Casiraghi, an heir to an Italian oil fortune. His maternal grandparents were Rainier III, Prince of Monaco and Princess Grace... son	Albert II Albert II, Prince of Monaco Albert II, Sovereign Prince of Monaco is the head of the House of Grimaldi and the ruler of the Principality of Monaco. He is the son of Rainier III, Prince of Monaco, and the American actress Grace Kelly...