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