Harry Mason Reid (born December 2, 1939) is the senior United States Senator from Nevada and a member of the Democratic Party. He has been the Senate's Majority Leader since January 2007.

Reid has been leader of the Senate Democrats since 2005, serving as Minority Leader from 2005 until the Democrats won control of the Senate in the 2006 congressional elections. He is the first member of The Church of Jesus Christ of Latter-day Saints to serve as Majority Leader.

Reid was born in Searchlight, Nevada, the son of a miner in the camp 50 miles southeast of Las Vegas. He attended Basic High School in Henderson, Nevada, where he played football and was an amateur boxer. While at Basic he met future Nevada governor Mike O'Callaghan, who was a teacher there. Reid attended Southern Utah University and Utah State University.