Robert Cannon may refer to:
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Robert Cannon (Behram Pasha) (1811–1882), British lieutenant general
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Robert Cannon (triple jumper) (born 1958), American Olympic athlete
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Robert C. Cannon (1917–2008), American judge, Milwaukee Brewers executive
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Robert Milchrist Cannon (1901–1976), United States Army Lieutenant General
{{human name disambiguation, Cannon, Robert