Alan Lee Keyes (born August 7, 1950) is an American conservative political activist, author and former diplomat, and perennial candidate for public office. He ran for President of the United States in 1992, 1996, 2000, and 2008, and was a Republican nominee for the U.S. Senate in 1988, 1992, and 2004. Keyes served in the U.S. Foreign Service, was appointed Ambassador to the Economic and Social Council of the United Nations under President Ronald Reagan, and served as Assistant Secretary of State for International Organization Affairs from 1985 to 1987.

Born in a naval hospital on Long Island, New York, Keyes was the fifth child to Allison and Gerthina Keyes, a U.S. Army sergeant and a teacher. Due to his father's tours of duty, the Keyes family traveled frequently. Keyes lived in Georgia, Maryland, New Jersey, New York, Texas, Virginia and overseas in Italy.

After high school, Keyes attended Cornell University, where he was a member of the Cornell University Glee Club and The Hangovers. He studied political philosophy with American philosopher and essayist Allan Bloom and has said that Bloom was the professor who influenced him most in his undergraduate studies. Later, Keyes received death threats for opposing Vietnam war protesters who seized a campus building. Keyes has stated that a passage of Bloom's book, The Closing of the American Mind, refers to this incident, speaking of an African-American student "whose life had been threatened by a black faculty member when the student refused to participate in a demonstration" at Cornell. Shortly thereafter, he left the school and spent a year in Paris under a Cornell study abroad program connected with Bloom.