| Name | Title | Court | County | Rate this Judge | Rating | # of Ratings |
| Hon. Charles O'Connor, Jr. | Circuit Court Judge |
County Court
| Shelby |  | | 1 |
| Hon. Lyn O'Neal | Commissioner |
County Court
| Henry | | | 0 |
| Hon. Timothy Oakes | Superior Court Judge |
Civil Court
| Marion | | | 0 |
| Hon. Richard Obendorf | Judge |
Municipal Court
| DeKalb | | | 0 |
| Hon. Mary Anne Oldham | Commissioner |
Criminal Court
| Marion | | | 0 |
| Hon. Susan Orr Henderson | Circuit Court Judge |
County Court
| Fountain | | | 0 |
| Hon. Susan Orth | Superior Court Judge |
County Court
| Floyd | | 1.4 | 1 |
| Hon. Gregory Osborn | Judge |
Municipal Court
| Jasper | | | 0 |
| Hon. James Osborn | Superior Court Judge |
Civil Court
| Marion | | | 1 |
| Hon. Jim Osborne | Superior Court Judge |
County Court
| Knox | | | 0 |
| Hon. Kristine Osterday | Magistrate Judge |
County Court
| Elkhart | | | 1 |
| Hon. Steven Owen | Circuit Court Judge |
County Court
| Orange | | | 0 |
| Hon. Maureen Owen | Judge |
Municipal Court
| Hendricks | | | 0 |
| Hon. Marsha Owens Howser | Superior Court Judge |
County Court
| Scott | | | 0 |