James Roger Johnston (18 June 1930 – 24 June 2020) was an Australian politician. He contested the Division of Melbourne Ports in 1975, but lost to the incumbent Labor member Frank Crean. Following this, Johnston successfully sought Liberal preselection for Hotham, competing against nine other members."Engineer replaces Chipp", The Canberra Times, 12 September 1977. In 1977, he was elected to the Australian House of Representatives as the Liberal member for Hotham. He was a member of the Parliamentary Yacht Club, along with Phillip Lynch, Alan Cadman and Marshall Baillieu."Righting the sailing tale", Phillip Lynch, Alan Cadman, Marshall Baillieu, Roger Johnston, The Canberra Times, 26 November 1978. In 1979, Johnston was part of a delegation of Australian parliamentarians sent to Port Moresby to learn about resources development."Aust MPs on tour", Papua New Guinea Post-Courier, 19 July 1979. He was defeated in 1980. He attempted to gain preselection for the 1982 Flinders by-election."Lynch announces resignation PM decides on Flinders by-election", Teresa Mannix, The Canberra Times, 23 October 1982.
Johnston died on 24 June 2020, at the age of 90. He was a great-grandson of David Syme.
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