The title of duke of Ayen was created in 1737 for the benefit of Louis, duke of Noailles by the elevation of the county of Ayen to duchy.
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This is a list of counts, and later dukes of the county and duchy of Ayen.
Henriette Anne Louise d'Aguesseau, Duchess of Noailles, Princess of Tingry (12 February 1737 – 22 July 1794), was the heiress of her grandfather, Henri François d'Aguesseau, and wife of Jean Paul François de Noailles, Count and Duke of Ayen.