French noble family, descended from a Piedmontese family of the 17th century, that produced many high-ranking soldiers, politicians, and diplomats.
Prominent members included François-Marie, 1st duke de Broglie (1671–1745), general and marshal of France; Victor-François, 2nd duke de Broglie (1718–1814), a soldier and marshal of France; Victor, 3rd duke de Broglie (1785–1870), a prime minister who campaigned against reactionary forces; and Albert, 4th duke de Broglie (1821–1901), who served as premier in the early years of the French Third Republic. The family also included the physicist Louis-Victor, 7th duke de Broglie .