Robert or Bob Duncan may refer to:

Arts

  • Robert Duncan (poet) (1919–1988), American poet
  • Robert Duncan (writer) (born 1952), American music critic
  • Robert Duncan (actor) (born 1952), British TV actor
  • Robert Duncan (composer), American composer
  • Bob Duncan, a character in Good Luck Charlie

Politics

  • Robert Duncan (politician) (1850–1925), Unionist Party (Scotland) MP for Govan
  • Robert B. Duncan (1920–2011), U.S. representative from Oregon
  • Mike Duncan (politician) (Robert Michael Duncan, born 1951), chairman of the Republican National Committee
  • Robert M. Duncan Jr. (born 1978), United States attorney and son of Mike Duncan
  • Robert M. Duncan (Oregon politician), former president of the Oregon State Senate
  • Robert L. Duncan (born 1953), Texas state senator

Science and engineering

  • Robert C. Duncan (engineer) (1923–2003), American engineer
  • Robert C. Duncan (astrophysicist) (born 1955), American astrophysicist
  • Robert Duncan (physicist), American physicist

Other people

  • Robert Duncan of Robert Duncan and Company, a shipyard in the Port of Glasgow on the Clyde in Scotland
  • Robert C. Duncan (athlete) (1887–1957), British Olympic athlete
  • Robert Duncan (footballer) (1891–1984), Australian rules footballer
  • Robert Duncan (pilot) (1920–2013), American World War II flying ace
  • Robert Morton Duncan (1927–2012), U.S. federal judge
  • Robert Duncan (rower) (born 1931), Australian rower
  • Robert Duncan (bishop) (born 1948), archbishop of the Anglican Church in North America
  • Robert Duncan (rugby union) (1896–1981), English international rugby union player

See also

  • Bobby Duncum (1944–2026), American professional wrestler and football player
  • Rob Duncan, mayor of Norwalk, Ohio, who endorsed Jim Renacci in the 2018 United States Senate election in Ohio
  • Rob Duncan, councillor of Manor (Trafford electoral ward)
  • Rob Duncan of the visual effects team for Australia (2008 film)
  • Rob Duncan, former principal of Narre Warren South P-12 College
  • Rob Duncan, drummer for The Standard (band)
  • Rob Duncan, musical collaborator with Lisbeth Scott
  • Rob Duncan of Windsor Lancers Rugby
  • Long Rob Duncan, played by Derek Anders in Sunset Song (TV series)
  • Rob Duncan Coalson from the University of Pittsburgh
  • Robert Duncan Bell (1878–1953), acting governor of Bombay during the British Raj
  • Robert Duncan Luce (1925–2012), American mathematician and social scientist
  • Robert Duncan MacPherson (born 1944), American mathematician at the Institute for Advanced Study and Princeton University
  • Robert Duncan McNeill (born 1964), American director, producer, and actor
  • Robert Duncan Milne (1844–1899), San Francisco science fiction writer
  • Robert Duncan Sherrington (1902–1966), Australian politician
  • Robert Duncan Wilmot (1809–1891), Canadian politician and a Father of Confederation
  • Robert Duncan Wilmot Jr. (1837–1920), Canadian farmer, businessman and politician
  • Robert Duncanson (disambiguation)