Leslie Samuel Duncan (20 August 1880 – 27 February 1952) was a newspaper editor and politician in the State of South Australia.
He and brother-in-law Harry Jory started in the newspaper business in Edenhope, Victoria, where they owned the Edenhope Chronicle, which folded in 1908,[2] then they established The Border Chronicle at Bordertown and Lawloit Times at Kaniva, Victoria, later owned by W. D.
[3] He disposed of the Border Chronicle to Ben L. Wilkinson and took over the Barossa News, Tanunda in 1915,[4] which he left in 1917 to take the position of managing editor of The Bunyip,[5] with which he had almost 30 years' association, during which time he revolutionised and expanded the paper's mechanical operations.
He served as secretary of the parliamentary Labor Party until he was forced in 1951 to step down due to ill health.
Among their children were sons Leslie, Alan and Douglas, and daughters Rosina Isabelle (c. 1912 – 14 August 1937) and Joan.