Lisa Murray Madigan is an American lawyer and politician. A member of the Democratic Party, she served as Attorney General of the U.S. state of Illinois from 2003 to 2019, being the first woman to hold that position. She is the adopted daughter of Michael Madigan, who served as Speaker of the Illinois House of Representatives from 1983 to 1995 and from 1997 to 2021.

The Illinois attorney general is the highest legal officer of the state of Illinois in the United States. Originally an appointed office, it is now an office filled by statewide election. Based in Chicago and Springfield, the attorney general is responsible for providing legal counsel for the various state agencies including the governor of Illinois and Illinois General Assembly, as well as conducting all legal affairs pertaining to the state.