Hazel Reid O'Leary (born May 17, 1937) was the seventh United States Secretary of Energy, from 1993 to 1997, appointed by President Bill Clinton.
She was the first woman and first African American to hold the position.
She served as president of Fisk University, a historically black college and her alma mater, from 2004 to 2013.
O'Leary's tenure at Fisk came amid financial difficulty for the school, during which time she increased enrollment and contentiously used school's art collection to raise funds.
O'Leary received her bachelor's degree from Fisk before earning her Bachelor of Laws degree from Rutgers School of Law.
O'Leary worked as a prosecutor in New Jersey and then in a private consulting/accounting firm before joining the Carter Administration.
O'Leary returned to the private sector and rejoined the government as the first Secretary of Energy of the Clinton administration.
As Secretary of Energy, O'Leary declassified old documents detailing how the United States had previously conducted secret testing on the effects of radiation on humans.
O'Leary received criticism for her excessive spending as Secretary.