François de Noailles, 9th Duke of Noailles (François Agénor Alexandre Hélie; 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 married Charlotte de Caumont La Force (29 September 1917 – 19 December 2002) in 1936 at Paris.
They had one child, a son, who has three children: Hélie-Marie-Auguste-Jacques-Bertrand-Philippe de Noailles, Duke of Ayen (born 1943), who succeeded him upon his death at Château de Champlâtreux in 2009.
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