| Name | Title | Court | Circuit | County | Rate this Judge | Rating | # of Ratings |
| Hon. James Zafiratos | Associate Judge |
Circuit Court
| Cook Judicial Circuit | Cook |  | | 0 |
| Hon. Leo Zappa, Jr. | Circuit Judge |
Circuit Court
| Seventh Judicial Circuit | Sangamon | | 4.0 | 1 |
| Hon. Kenneth Zelazo | Associate Judge |
Circuit Court
| Twelfth Judicial Circuit | Will | | 3.4 | 3 |
| Hon. Frank Zelezinski | Subcircuit Judge |
Circuit Court
| Cook Judicial Circuit | Cook | | | 0 |
| Hon. Kathryn Zenoff | Circuit Judge |
Circuit Court
| Seventeenth Judicial Circuit | Boone | | | 0 |
| Hon. Richard Zimmer | Associate Judge |
Circuit Court
| Fourteenth Judicial Circuit | Rock Island | | | 1 |
| Hon. Susan Zwick | Subcircuit Judge |
Circuit Court
| Cook Judicial Circuit | Cook | | 6.1 | 3 |