Duc de Bourbon

Dukedom of Bourbon
Coat of arms of the dukes from 1327 to 1410
Creation date	1327
First holder	Louis I, Duke of Bourbon
Present holder	Louis Alphonse de Bourbon

Duke of Bourbon (French: Duc de Bourbon) is a title in the peerage of France. It was created in the first half of the 14th century for the eldest son of Robert of France, Count of Clermont and Beatrice of Burgundy, heiress of the lordship of Bourbon. In 1416, with the death of John of Valois, the Dukes of Bourbon were simultaneously Dukes of Auvergne.

Although the senior line came to an end in 1527, the cadet branch of La Marche-Vendome would later succeed to the French throne as the Royal House of Bourbon, which would later spread out to other kingdoms and duchies in Europe. After this date, the title was given to several Princes of Condé and sons of the French Royal family.

For most of their history, the Dukes of Bourbon were closely allied to their royal Valois cousins. This allowed them to maintain their rank with comparable prestige. They fought against the English in the Hundred Years' War, and took the side of the Armagnac faction during the Armagnac–Burgundian Civil War.

Peter II and his wife, Anne of France, daughter of Louis XI, had only one surviving child, Suzanne. They made her their heir through a concession from Louis XII of France. Anne, knowing that the Bourbon-Montpensier branch, the next senior branch of the Bourbon family, would pursue their claim, married her daughter to Charles, Count of Montpensier. Their marriage thus consolidated the vast possessions of the Bourbon family. The project, however, failed. Suzanne died childless, and the new king's mother, Louise of Savoy, claimed her inheritance, as heir by proximity of blood. Louise offered to marry the Duke of Bourbon to settle the matter amicably. But Louise of Savoy was already 45 years old, so the duke refused her, with insulting language. The king sided with his mother, driving the duke into a conspiracy with the Emperor and the King of England. Once discovered, he was stripped of his titles and possessions in 1523. With his death in 1527, the line of Bourbon-Montpensier became extinct in the male line. The next senior line, of Bourbon-Vendôme, was not allowed to inherit the forfeited lands.