| Name | Rate this Judge | Rating | # of Ratings |
| Hon. James P. O Hara (D.Colo.) |  | 6.7 | 4 |
| Hon. John J. O Sullivan (S.D.Fla.) | | 9.6 | 8 |
| Hon. Daphne Oberg (D.Utah) | | 0.0 | 0 |
| Hon. Sheila K. Oberto (E.D.Cal.) | | 0.0 | 0 |
| Hon. Rozella A. Oliver (C.D.Cal.) | | 8.9 | 9 |
| Hon. Peter Oppeneer (W.D.Wis.) | | 0.0 | 0 |
| Hon. Scott A. Oravec (D.Alaska) | | 0.0 | 0 |
| Hon. James Orenstein (E.D.N.Y.) | | 4.4 | 68 |
| Hon. Carolyn Ostby (D.Mont.) | | 9.9 | 4 |
| Hon. Alicia M. Otazo-Reyes (S.D.Fla.) | | 0.0 | 0 |
| Hon. John E. Ott (N.D.Ala.) | | 9.3 | 13 |