|Successor Honore V|
Spouse Louise d\'Aumont
|Name Honore Prince|
|Reign 30 May 1814 – 16 February 1819|
Predecessor National Convention as de facto ruling government Honore III as previous reigning monarch
Born 17 May 1758 (1758-05-17)
Died 16 February 1819(1819-02-16) (aged 60)
Burial Saint Nicholas Cathedral
Honoré IV (17 May 1758 – 16 February 1819) 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. After the fall of Napoleon I, he regained control of the principality thanks to a clause added by Charles Maurice de Talleyrand-Périgord at the Congress of Vienna stating that, "the Prince of Monaco should return to his estates", and passed on his titles to his eldest son, Honoré V, Prince of Monaco.
Honoré IV married Louise Félicité Victoire d'Aumont, Duchess of Aumont, Duchess Mazarin and of La Meilleraye on 15 July 1777 in Paris. They divorced in 1798. They had two sons:
- Honoré V, Prince of Monaco (1778–1841)
- Florestan I, Prince of Monaco (1785–1856)
During the French occupation of Monaco, Honoré IV was imprisoned for several years. Illnesses resulting from this imprisonment incapacitated Honoré IV in his later years, and following the re-establishment of the Principality a regency was established to rule in Honoré's name.