| Abbreviation | Definition |
|---|---|
| OCADU | OCAD University (prior to 2010, OCAD was an acronym for Ontario Collage of Art & Design) |
| OCAST | Oklahoma Center for the Advancement of Science and Technology |
| OCB | Off Campus Board |
| OCC | Oral Communication Center |
| OCCB | Organic Chemistry and Chemical Biology |
| OCCB | Oxford and Cambridge Club Beijing |
| OCCS | Off Campus and Commuter Services |
| OCE | Office of Continuing Education |
| OCE | Outreach Cooperative Extension |
| OCED | Office of Cultural Enhancement and Diversity |
| OCED | Outreach & Continuing Education Department |
| OCI | On Campus Interviews |
| OCL | Off-Campus Life |
| OCM | On Campus Marketing |
| OCP | Oxford Concordance Program |
| OCPA | Overseas Chinese Physics Association |
| OCR | On-Campus Recruiting |
| OCS | Office of Career Services |
| OCS | On Campus Session |
| OCSHA | Off-Campus Student Housing Association |