John Duncan
John Duncan may refer to:
Arts and entertainment
- John Duncan , Scottish painter
- John Duncan , American artist and musician
- Big John Duncan, Scottish punk musician
- John Duncan , English musician
Law, military, and politics
- John Duncan , South Australian pastoralist and politician
- John Duncan , MP from British Columbia
- John Duncan , New Zealand politician
- John D. C. Duncan Jr., American politician and lawyer
- John Edward Duncan, member of the New Zealand Legislative Council
- John Duncan , U.S. Department of the Treasury
- John Riley Duncan, Texas lawman
- John Duncan Sr., U.S. Representative from Tennessee
- John S. R. Duncan, British administrator in Sudan, then diplomat, high commissioner and ambassador
- Jimmy Duncan , U.S. Representative from Tennessee, son of John Duncan, Sr., above
- John Duncan , British diplomat, ambassador for Multilateral Arms Control and Disarmament 2006–11
- John Alton Duncan, Manitoba judge
- John Duncan , British general
- John Duncan , British general
Religion
- John Duncan, a.k.a. John Dongan, Manx religious leader
- John Duncan , English miscellaneous writer and army chaplain
- John Duncan , aka Rabbi Duncan, Scottish religious leader and educator
- John Duncan , English Archdeacon of Birmingham from 1985 to 2001
Sports
- Art Duncan, Canadian ice hockey player
- John Ross Duncan, Australian cricketer
- John Duncan , Scottish football player and manager
- John William Duncan, Welsh field hockey player
Others
- John Duncan , American writer
- John Duncan , Scottish weaver and botanist
- John Duncan,, British neuroscientist
- John Duncan , Scottish surgeon, President of the Royal College of Surgeons of Edinburgh
- John Duncan , Scottish writer on weaving
- John Duncan , Scottish traveller in Africa
- John Charles Duncan, American astronomer
- John H. Duncan, American architect
- John Holt Duncan, one of eight founders of Beta Theta Pi, a college fraternity at Miami University
- John S. Duncan, British neurologist
Johnny Duncan
- Johnny Duncan , American actor
- Johnny Duncan , American skiffle and bluegrass musician
- Johnny Duncan , American country-music singer
- Johnny Duncan , Scottish football player and manager associated with Leicester City