Paul O'Neill, American businessman and politician, 72nd United States Secretary of the Treasury (died 2020)

Paul Henry O'Neill was an American businessman and government official who served as the 72nd United States secretary of the treasury for part of President George W. Bush's first term, from January 2001 until his resignation in December 2002. Prior to his term as Secretary, O'Neill was chairman and CEO of industrial giant Alcoa and chairman of the RAND Corporation.

The United States secretary of the treasury is the head of the United States Department of the Treasury, and is the chief financial officer of the federal government of the United States. The secretary of the treasury serves as the principal advisor to the president of the United States on all matters pertaining to economic and fiscal policy. The secretary is, by custom, a member of the president's cabinet and, by law, a member of the National Security Council, and fifth in the U.S. presidential line of succession.