| Abbreviation | Definition |
|---|---|
| NZCC | New Zealand Career College |
| NZCC | New Zealand College Of Chiropractic |
| OAC | Ontario Agricultural College |
| OACC | Ohio Association of Community Colleges |
| OACC | Oklahoma Association of Community Colleges |
| OAMC | Ohio Agricultural and Mechanical College |
| OATC | Office of Assessment Trinity College |
| OBCC | Outward Bound Canada College |
| OBFC | Osaka Bunka Fashion College |
| OC | Oberlin College |
| OC | Odessa College |
| OCAA | Ontario Colleges Athletic Association |
| OCAC | Oregon College of Art & Craft |
| OCAC | Oregon College of Art and Craft |
| OCAD | Ontario College Advanced Diploma |
| OCAD | Ontario College of Art and Design |
| OCAD | Ontario College of Art Design |
| OCAD | Otis College of Art and Design |
| OCAN | Ohio College Access Network |
| OCAO | Oxford Colleges Admissions Office |