François-Agénor-Alexandre-Hélie de Noailles, 9th Duke of Noailles (20 November 1905 – 11 January 2009) was the nephew of Adrien-Maurice-Victurnien-Mathieu, 8th duc de Noailles. His parents were Marquis Hélie Guillaume de Noailles (26 May 1871 – 24 May 1932) and Corisande de Gramont (8 August 1880 – 5 March 1977), daughter of Duke de Gramont and Marguerite de Rothschild. He styled himself duc de Noailles (Duke of Noailles) on the death of his uncle Adrien de Noailles in 1953.