Duncan John Morley (7 March 1851 – 25 May 1915), known professionally as Charles Cartwright, was an English stage actor and actor manager in the Victorian era. He was best known for his portrayal of villains in the melodramas that flourished at London's Adelphi Theatre in the 19th century. He also played more sympathetic characters and, for a time, was under the management of Sir Henry Irving at the Lyceum. He toured extensively with productions around England and the provinces, as well as spending a season in India, two seasons in Australia and three in the USA.