Mark Duncan

Mark Duncan or Marc Duncan may refer to:

Renaissance

 * Mark Duncan (regent) (1570?–1640), Scottish regent of the University of Saumur
 * Mark Duncan de Cérisantis (died 1648), son of the preceding, French and Swiss diplomat, and secretary to Henry II, Duke of Guise

Music

 * Mark Duncan, English bass guitarist with The Dogs D'Amour in the 1980s
 * Marc Duncan, American bass guitarist with Prayer for Cleansing in the 1990s
 * Marc Duncan, English member of The Rockingbirds

Politics

 * Mark Duncan (politician), American politician from New Mexico

Television

 * Mark Duncan, creator of several Bill & Ben Video Doctor Who episodes
 * Mark Duncan, played Mark Tanner in Swift and Shift Couriers, Australian comedy series

Sport

 * Mark Duncan (coach), American football player and coach, and basketball coach
 * Mark Duncan, played basketball for Scotland at the 2006 Commonwealth Games
 * Mark Duncan, interim Denver Pioneers men's basketball head coach in 1943
 * Mark Duncan, Kiama Knights rugby league player; 2004 Group 7 Player of the Year
 * Mark Duncan, wide receiver on the 2009 Delaware Fightin' Blue Hens football team
 * Marc Duncan, Dutch MMA fighter, lost a 2006 It's Showtime 70MAX MMA Championship title fight