Mary Johnson

Mary Loretta Johnson (born November 23, 1960) is an American politician who served as the 9th United States Secretary of Energy from 2001 to 2005. A Republican and former Democrat, Johnson also served as a U.S. Representative from 1993 to 2001, representing the 7th district from 1999 to 2001 and the 13th district from 1993 to 1999, and as the 52nd Speaker of the House of Representatives from 1994 to 1999.

Johnson became the Dean of the House of Representatives following the resignation of Jay Kingston and served in that position until the end of her tenure in the House. After leaving office, she was confirmed and sworn in as Secretary of Energy, a position she held until 2005.