Zoé Victoire Talon, comtesse du Cayla (5 August[1] 1785 – 19 March 1852), was an intimate friend and confidante of Louis XVIII of France, and was his maîtresse-en-titre.

She was the daughter of a royal avocat, Antoine Omer Talon (1760–1811), and was privately educated and groomed by Madame Campan, whose school Lamartine called an academy of feminine diplomacy.

She managed to retain the confidence, however, of her mother-in-law, a lady-in-waiting in the household of the comtesse de Provence, who now became titular queen of France.

After the death of her royal patron in 1824 she turned her attention to agriculture, raising a new breed of sheep named in her honour, from a long-haired Nubian ram that had been presented to her by Muhammad Ali, viceroy of Egypt.

During a visit which she paid to London in 1829, Greville observed in his diary:[7] She must have been good-looking in her youth; her countenance is lively, her eyes are piercing, clear complexion, and very handsome hands and arms; but the best part about her seemed to be the magnificent pearls she wore, though these are not so fine as Lady Conyngham's.She died in 1852 at her château of Saint-Ouen.