Hardrada Harold Hume (June 10, 1875 – October 10, 1965) was a Canadian-born American university professor, administrator and horticulturalist. Hume was a native of Ontario, and earned bachelor's and master's degrees before embarking on a career as a research botanist, horticulturalist and professor. After working as an academic administrator, Hume later served as the interim president of the University of Florida, serving during September 1947.