Jean Pâris de Monmartel (3 August 1690 at Moirans – 10 September 1766 at his château at Brunoy) was a French financier.
He was the youngest of the four Pâris brothers, who were financiers under Louis XIV and Louis XV.
At the height of his fortunes he had 370,000 livres invested in the powerful Société d'Angola, set up to deal in the Atlantic slave trade, managed by Antoine Walsh, the richest and most famous of the Irish of Nantes.He held a number of titles: marquis of Brunoy, count of Sampigny, baron Dagouville, count of Châteaumeillant, d'Argenton et Veuil d'Argenson, viscount de la Motte Feuilly, baron Saint-Jeanvrin, Saligny et Marigny, seigneur of Villers-sur-Mer, Chateauneuf, La Chétardie, Varenne, Lamotte-Glauville, Bourgeauville, Drubec, des Humières, Le Donjon, La Forest les Dureaux, Lamirande, Lachetardie, and other places.