Marcel Boussac (17 April 1889 – 21 March 1980) was a French entrepreneur best known for his ownership of the Maison Dior and one of the most successful thoroughbred race horse breeding farms in European history. Born in Châteauroux, Indre, France, Boussac made a fortune in textile manufacturing. In 1919 he acquired the Château de Mivoisin, a 36 square kilometre property located 1½ hours south of Paris in Dammarie-sur-Loing, Loiret. He was married for many years to the Belgian opera singer Fanny Heldy. They are buried together in the Cimetière de Montmartre in the Montmartre Quarter of Paris.