| Name | Title | Vicinage | County | Rate this Judge | Rating | # of Ratings |
| Hon. Amy O'Connor | Superior Court Judge | Vicinage 10 | Morris |  | 9.6 | 3 |
| Hon. Patricia O'Dowd | Judge | Vicinage 10 | Morris | | | 0 |
| Hon. John O'Dwyer | Superior Court Judge | Vicinage 2 | Bergen | | | 0 |
| Hon. Jill O'Malley | Presiding Judge | Vicinage 9 | Monmouth | | | 2 |
| Hon. Michael O'Neill | Superior Court Judge | Vicinage 13 | Hunterdon | | | 0 |
| Hon. Michael O'Neill | Superior Court Judge | Vicinage 13 | Somerset | | 5.6 | 6 |
| Hon. Caroline Olivera | Judge | Vicinage 10 | Morris | | | 3 |
| Hon. Christine Orlando | Superior Court Judge | Vicinage 4 | Camden | | | 0 |
| Hon. Mirtha Ospina | Superior Court Judge | Vicinage 6 | Hudson | | 3.4 | 13 |
| Hon. Mitchel Ostrer | Superior Court Judge | Vicinage 7 | Mercer | | | 1 |
| Hon. Michael Ostrowski, Jr. | Superior Court Judge | Vicinage 15 | Gloucester | | 2.5 | 6 |
| Hon. Nicholas Ostuni | Judge | Vicinage 2 | Bergen | | | 0 |
| Hon. Joseph Oxley | Superior Court Judge | Vicinage 9 | Monmouth | | | 0 |