Saint Ouen's Manor, Medieval manor house in Saint Ouen, Jersey.

Saint Ouen's Manor is a stone manor house in the parish of St. Ouen, Jersey, and the ancestral home of the De Carteret family. The building has a central section flanked by two gabled wings, with a steeply pitched dark roof and tall chimneys. It also includes a mediaeval chapel, St Anne's Chapel.

The first record of the house dates from 1135, when Renaud I de Carteret was seigneur; in 1125 he had already given the chapel and the parish of Carteret to the abbey of Mont-Saint-Michel. The building was heavily remodelled in the 17th century. It remains the ancestral home of the De Carteret family, who were the medieval dynasty of the seigneurs of Saint Ouen.

The manor takes its name from Saint Ouen, the parish where it stands, and its chapel is dedicated to Saint Anne. The De Carteret family, seigneurs of Saint Ouen since Renaud I in the 12th century, still owns the house, which opens occasionally for receptions, ceremonies and weddings.

The manor is a private home and only occasionally open to the public, so visits depend on receptions, ceremonies or weddings held there. A red sign on the right pier of the gatehouse reads "PRIVATE PROPERTY" and "NO PARKING", so do not treat the grounds as public parkland. The site lies in the parish of Saint Ouen in western Jersey.

The manor was offered as a prize to the winner of the 1940 Jersey local elections, Edward Campbell, who became disillusioned with the idea and declined it. The estate also holds St Anne's Chapel, a mediaeval chapel on the grounds.