Hornor is a surname. Notable people with the surname include:
Charles W. Hornor (1813–1905), American lawyer and political activist Edward Hornor Coates (1846-1921), American businessman John Hornor Jacobs (born 1971), American author Lynn Hornor (1874–1933), American politician Thomas Hornor (surveyor) (1785–1844), British land surveyor, artist and inventor