Breteuil may refer to: Places in France Breteuil, Eure, in the Eure département; alternative name Breteuil-sur-Iton Siege of Breteuil in 1346 during the Hundred Years' War Breteuil, Oise, in the Oise département; alternative name Breteuil-sur-Noye , Oise Château de Breteuil, southwest of Paris, in the Yvelines département People Baron de Breteuil Emilie de Breteuil, marquise du Chatelet Henri Le Tonnelier de Breteuil (1848-1916), French aristocrat and politician