Harlan Page Davidson (September 15, 1838 – January 19, 1913) was an educator in private education. He was a teacher and director of several schools and academies for fifty years. He founded Northwestern Military Academy and was its president for twenty years. Davidson was a prohibitionist. He was an editor and published a newspaper in the cause of the temperance movement. It was because of his newspaper that the county in lived in became the banner Prohibition county of New Jersey. He was commissioned a Colonel in the Illinois National guard.