| Name | Address | Games | Actions |
|---|---|---|---|
| Occidental College | Los Angeles, CA | 6 | |
| O'Fallon Township High School Stadium | 600 S. Smiley Street, O'Fallon, IL, 62269 | 1 | |
| Ohio State University | Columbus, OH, 43210 | ||
| Oklahoma State University | Stillwater, OK | 3 | |
| Old Dragon Stadium | 2410 North Carroll Avenue, Southlake, TX, 76092 | 1 | |
| Oregon | 18th Agate Alley, Eugene, OR, 97403 | 6 | |
| Oregon - Nex-Turf Field | Eugene, OR | 2 | |
| Oregon State University | Student Legacy Park, Corvallis, OR, 97331 | 3 | |
| Pacific | Stockton, CA | 6 | |
| Palm Beach Atlantic | Rinker Athletic Campus, West Palm Beach, FL, 33405 | 7 |