Mary Kay O'Brien
Mary Kay O'Brien  | |
|---|---|
O'Brien in 2012  | |
| Justice of the Illinois Supreme Court | |
| Assumed office  December 5, 2022  | |
| Preceded by | Robert Carter | 
| Judge of the Illinois Appellate Court for the 3rd district | |
| In office December 26, 2003 – December 5, 2022  | |
| Preceded by | Thomas J. Homer | 
| Succeeded by | Linda Davenport | 
| Member of the Illinois House of Representatives from the 75th district  | |
| In office January 1997 – December 17, 2003  | |
| Preceded by | Stephen Spangler | 
| Succeeded by | Careen M. Gordon | 
| Personal details | |
| Born | June 4, 1965 Kankakee, Illinois, U.S.  | 
| Political party | Democratic | 
| Education | Joliet Junior College Western Illinois University (BA) University of Illinois, Urbana-Champaign (JD)  | 
Mary Kay O'Brien (born June 4, 1965) is an American judge and politician who serves as a justice of the Illinois Supreme Court since 2022.