Alan Lee Keyes (born August 7, 1950) is an American politician, political scientist, and perennial candidate who served as the Assistant Secretary of State for International Organization Affairs from 1985 to 1987. A member of the Republican Party, Keyes sought the nomination for President of the United States in 1996, 2000, and 2008.

A doctoral graduate of Harvard University, Keyes began his diplomatic career in the U.S. Foreign Service in 1979 at the United States consulate in Mumbai, India, and later in the American embassy in Zimbabwe. Keyes was appointed Ambassador to the Economic and Social Council of the United Nations by President Ronald Reagan and later as President Reagan's Assistant Secretary of State for International Organization Affairs, a position he held from November 13, 1985, until November 17, 1987; in his capacities as a U.N ambassador, Keyes was involved in the implementation of the Mexico City Policy.

Aside from his presidential runs, he was the Republican nominee for the U.S. Senate in Maryland against Paul Sarbanes in 1988 and Barbara Mikulski in 1992, as well as in Illinois against Barack Obama in 2004. Keyes lost all three elections by wide margins.

Keyes hosted a radio call-in show, The Alan Keyes Show: America's Wake-Up Call, from 1994 until 1998 on WCBM. The show was briefly simulcast by National Empowerment Television. In 2002, he briefly hosted a television commentary show on the MSNBC cable network, Alan Keyes Is Making Sense. He is a long time columnist for World Net Daily.

Born at the St. Albans Naval Hospital (now a VA Community Living Center) in St. Albans, Queens, Keyes is the fifth child of mother Gerthina (Quick) and father Allison L. 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. Keyes has stated that he 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 after this incident occurred, Keyes left Cornell and spent a year in Paris under a Cornell study-abroad program connected with Bloom.

Keyes continued his studies at Harvard University, where he resided in Winthrop House. Keyes completed his Bachelor of Arts degree in government in 1972, graduating magna cum laude. During his first year of graduate school, Keyes's roommate was William Kristol. In 1988, Kristol ran Keyes's unsuccessful U.S. Senate campaign in Maryland. Keyes earned his Ph.D. in government from Harvard in 1979, having written a dissertation on Alexander Hamilton and constitutional theory under Harvey C. Mansfield. Due to student deferments and a high draft number, Keyes was not drafted to serve in the Vietnam War. Keyes and his family were staunch supporters of the war, in which his father served two tours of duty. Keyes was criticized by opponents of the war in Vietnam, but he says he was supporting his father and his brothers, who were also fighting in the war.

A year before completing his doctoral studies, Keyes joined the United States Department of State as a protégé of Jeane Kirkpatrick. In 1979, he was assigned to the consulate in Mumbai, India. The following year, Keyes was sent to serve at the embassy in Zimbabwe.