John Horne
John Horne is the name of the following people:
- John Horne (governor) († 1755), English governor of Bombay
- John Horne (botanist) (1835–1905), Scottish botanist
- John Horne (geologist) (1848–1928), Scottish geologist
- John Horne (historian) (born 1949), Irish historian
- John Horne Tooke (1736-1812), English writer
