Caryll is both a given name and a surname.
Given name Caryll Houselander (1901–1954), woodcarver and ecclesiastical artist Caryll Molyneux, 3rd Viscount Molyneux (1624–1699), English army officer
Surname Billy Caryll of Billy Caryll and Hilda Mundy (1892–1953), British husband-and-wife comedy duo John Caryll (senior) (1625–1711), English Baron John Caryll the younger (1667–1736), English Baron John Baptist Caryll (1713–1788), English Baron Ivan Caryll (1861–1921), Belgian composer
See also Caral Carel Carell Caril Carol (disambiguation) Caroll Caryl