Lisa Madigan (born July 30, 1966 in Chicago, Illinois) has been the 41st Attorney General of the U.S. state of Illinois since 2003, when she became the first female attorney general for Illinois. She is a Democrat and the daughter of Michael Madigan, who has been Speaker of the Illinois House of Representatives for most of the last quarter century. By the Illinois Constitution, with the office of Lieutenant Governor currently vacant she is next in line of succession.

On December 12, 2008, she attracted national attention after filing a motion with the Supreme Court of Illinois to temporarily remove Governor Rod Blagojevich from office. The motion was subsequently denied by the court without a hearing.

Madigan attended The Latin School of Chicago for her secondary education, and received her bachelor's degree from Georgetown University in 1988. She received her Juris Doctor (J.D.) from Loyola University Chicago School of Law.