| Abbreviation | Definition |
|---|---|
| OTC | Okefenokee Technical College |
| OTCC | Ozarks Technical Community College |
| OTHC | One Tree Hill College |
| OUC | Okanagan University College |
| OUSSC | Ojaswani Utkrishta Shiksha Sansthan College |
| OVC | Ohio Valley College |
| OVC | Ontario Veterinary College |
| OWC | Online Workforce College |
| OWCC | Okaloosa- Walton Community College, Florida |
| OWCH | Occasional Weekly College Hockey |
| OWJC | Okazaki Women's Junior College |
| OWJC | Okinawa Women's Junior College |
| OXY | Occidental College |
| P&S | Columbia University, College of Physicians and Surgeons |
| PAC | Palo Alto College |
| PAC | Palo Alto College's |
| PACC | Program for Advanced College Credit |
| PACCS | Piedmont Appalachian College of Commissioner Science |
| PACE | Program for Accelerated College Education |
| PACE | Program For Adult College Education |