Ken Duncan

Ken or Kenneth Duncan may refer to:


 * Ken Duncan (photographer) (born 1954), Australian photographer
 * Ken Duncan (politician) (born 1945), Louisiana state treasurer
 * Ken Duncan (American football) (born 1946), punter in the National Football League
 * Kenne Duncan (1903–1972), Canadian-born B-movie character actor
 * Kenneth Forrest Duncan (1881–1952), public servant and political figure in British Columbia
 * Kenneth Charles Duncan, Australian architect
 * Sandy Duncan (athlete) (1912–2005), English sprinter