Illinois Supreme Court / Joined 2010 / Active

Mary Jane Theis

Justice, Illinois Supreme Court

Mary Jane Theis is a Justice of the Illinois Supreme Court, serving since 2010. Sources ↓

Tenure
Since 2010 · 16 yrs
Judicial service
YearCourtAppointed byVote
2010Illinois Supreme Court
Education

Sources

Each fact on this page traces to a primary public record.

How we source & reconcile data → Data & Sources

16 years on the Illinois Supreme Court. Data last verified 2026-06-30. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).