List of Famous people named Duncan

Duncan Weir is a Scottish rugby union rugby player. He plays professional rugby for Gallagher Premiership Rugby side Worcester Warriors at fly-half.

Duncan Peter Regehr is a Canadian writer, multi-media artist, and film and television actor. He was also a figure skater and a classically trained Shakespearean stage actor in his native Canada, before heading to Hollywood in 1980. He is perhaps best known as Zorro in The Family Channel's television series based upon Johnston McCulley's classic hero, and from his roles in multiple television incarnations of Star Trek.

Donnchad mac Máel Coluim was king of Scots. He was son of Malcolm III and his first wife Ingibiorg Finnsdottir, widow of Thorfinn Sigurdsson.

Duncan Campbell was a Scots nobleman who died on 18 July 1758 as a result of wounds received in an unsuccessful frontal attack against French forces at Fort Carillon. The legend associated with Campbell is that a number of years prior—while still living in Scotland—Campbell gave shelter to a stranger who turned out to have killed Duncan's cousin. Faced with the conflict between betraying a guest or taking vengeance for the death of his cousin, Campbell compromised by allowing the killer to hide out in a cave. The ghost of Campbell's cousin is claimed to have appeared to Campbell in a dream and promised to meet him again at Ticonderoga, a place that Duncan surely had never heard of previously. This story was published in the poem "Ticonderoga a Legend of the West Highlands" by Robert Louis Stevenson in Scribner's Magazine December 1887.