James Duncan
James, Jim or Jimmy Duncan may refer to:
- Sir James Duncan, 1st Baronet (1899–1974), British politician
- James Duncan (athlete) (1887–1955), American athlete
- James Duncan (labor leader) (1857–1928), American labor leader
- James Duncan (Pennsylvania) (1756–1844), American politician from Pennsylvania
- James H. Duncan (1793–1869), American politician from Massachusetts
- James L. Duncan (1913–2000), American religious leader
- James Duncan (politician) British lawyer and Liberal politician
- Jim Duncan (cornerback) (1946-1972), American football player
- Jim Duncan (American football) (born 1929), American football player and coach
- Jimmy Duncan (rugby player) (1869–1953), New Zealand rugby union footballer, coach and referee
- Jimmy Duncan (U.S. politician) (born 1947), American politician from Tennessee
- Jimmy Duncan (songwriter), American songwriter
- Jamie Duncan, former American football linebacker
See also
- Duncan James, British singer with the band Blue