Haley Reeves Barbour (born October 22, 1947) is an American politician currently serving as the Governor of Mississippi. He gained a national spotlight in August 2005 after Mississippi was hit by Hurricane Katrina. Barbour won re-election as Governor in 2007. Under Mississippi's term limits, Barbour cannot run again for Governor in 2011 when his term ends.

Prior to being elected Governor, Barbour worked as a lawyer and lobbyist, and also served as Chairman of the Republican National Committee from 1993 to 1997, during which the Republicans captured both the United States Senate and United States House of Representatives for the first time since 1954. On June 24, 2009, Barbour was announced as the new leader of the Republican Governors Association, following the resignation of South Carolina Governor Mark Sanford as leader of the Association.

Barbour, the youngest of three sons, was born in Yazoo City, Mississippi, where he was raised, to Jeptha Fowlkes Barbour, Jr. His father, a lawyer, died when Barbour was two years old. He attended the University of Mississippi in Oxford, where he was a member of Sigma Alpha Epsilon fraternity, but skipped the first semester of his senior year to work on Richard Nixon's 1968 election campaign. He never earned a bachelor's degree. At the age of twenty-two, he ran the 1970 census for the state of Mississippi. He enrolled at the University of Mississippi Law School, receiving a Juris Doctor (J.D.) degree in 1972. Subsequently he joined his father's law firm in Yazoo City.