Jules, 1st Duke of Polignac

Jules de Polignac, 1st Duke of Polignac (Armand Jules François; 7 June 1746 – 21 September 1817) was a French nobleman and husband of Yolande de Polastron, the confidante of Queen Marie Antoinette. He became the first Duke of Polignac in 1780. He died at the age of seventy one in Little Russia, where he was given a manor by Catherine the Great.

Born at Claye-Souilly to Louis Héracle Armand de Polignac, Marquis of Mancini, and his wife, Diane Adélaide Zéphirine Mancini, herself a granddaughter of the Duke of Nevers and the Duke of Noailles. He bore the title of Marquis of Mancini.

He was the couple's fourth child of five, and their second son.

On 7 July 1767, he married Yolande Martine Gabrielle de Polastron. His wife was later the favourite of Marie Antoinette. As a result, he was created Duke of Polignac on 20 September 1780. At the revolution, he fled France and died in Ukraine at the age of 71. Rainier III, Prince of Monaco was an agnatic descendant of him and his wife.