Gaston Jean Baptiste de Renty (born 1611 at the castle of Beni, Diocese of Bayeux in Normandy; died 24 April 1649) was a French aristocrat and philanthropist. He ruled the Compagnie du Saint-Sacrement (Company of the Blessed Sacrament) between 1639 and 1649, and was under the influence of the French Oratorians, through his confessor .