Domaine Clarence Dillon is a French company that owns three Bordeaux wine estates, Château Haut-Brion, Château La Mission Haut- Brion and Château Quintus, as well as Clarence Dillon Wines, a Bordeaux fine wine merchant. It was founded in 1935. The company was named after the American financier Clarence Dillon, who bought Château Haut-Brion in 1935.