Hellier de Carteret (fl. 1563–1578) was Seigneur of Sark from 1563 to 1578. He was the son of Edouard de Carteret, Seigneur of Saint Ouen (d. 1533), and grandson of Philip De Carteret, 8th of St Ouen. It was Hellier's idea and initiative to recultivate the deserted island in 1563, and he was rewarded by being granted the fief in 1565 by Elizabeth I. He was also Seigneur of Saint Ouen in Jersey. He married his cousin, Margaret de Carteret. She was the widow of Clement Dumaresq and daughter of the bailiff Helier de Carteret, uncle and namesake to the Seigneur of Sark. Hellier and Margaret's son was Philippe de Carteret I.