| School | Conference | Location | Conference Rating | Enrollment | 2023 RPI |
| Oregon | Big 10 | Eugene, OR | 1 | 22257 | 8 |
| Ohio | Mid-American (MAC) | Athens, OH | 14 | 24797 | 89 |
| Ohio State | Big 10 | Columbus, OH | 1 | 61677 | 92 |
| Omaha | Summit | Omaha, NE | 18 | 15328 | 111 |
| Ole Miss (Mississippi) | SEC | University, MS | 3 | 21203 | 144 |
| Oklahoma | SEC | Morman, OK | 3 | 28042 | 148 |
| Oregon State | WCC | Corvallis, OR | 6 | 33193 | 151 |
| Old Dominion | Sun Belt | Hampton, VA | 11 | 23494 | 192 |
| Oakland | Horizon | Rochester, MI | 20 | 17170 | 195 |
| Oral Roberts | Summit | Tulsa, OK | 18 | 4711 | 324 |
| School | Conference | Location | Conference Rating | Enrollment | 2023 RPI |