Illinois Supreme Court / Joined 2022 / Active
Mary K. O'Brien
Justice, Illinois Supreme Court
Mary K. O'Brien is a Justice of the Illinois Supreme Court, serving since 2022. Sources ↓
- Tenure
- Since 2022 · 4 yrs
Judicial service
| Year | Court | Appointed by | Vote |
|---|---|---|---|
| 2022 | Illinois Supreme Court | – | – |
Sources
Each fact on this page traces to a primary public record.
How we source & reconcile data → Data & Sources
4 years on the Illinois Supreme Court. Data as of 2026-07-02. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).