Andrew Duncan
Andrew Duncan may refer to:
- Andrew Duncan (minister, died 1626), Scottish minister
- Andrew Duncan (physician, born 1744), Scottish pioneer for improved institutional care and treatment of mental health problems, founder of Royal Edinburgh Hospital
- Andrew Duncan (minister, born 1766), Moderator of the Church of Scotland in 1824
- Andrew Duncan (physician, born 1773), Scottish physician and professor at the University of Edinburgh
- Andrew Duncan (mayor), third mayor of Christchurch, New Zealand
- Sir Andrew Duncan (businessman), British businessman, MP and public official
- Andrew Duncan (poet), British poet
- Andrew Duncan (rugby league), British rugby league footballer
- Andrew Duncan (director), Canadian television director and writer