| Abbreviation | Definition |
|---|---|
| OCR | Office of Civil Rights |
| OCR | Oxford, Cambridge, and RSA Examinations |
| OCRE | Organizations Concerned about Rural Education |
| OCS | Officers' Candidate School |
| OCSG | Ohio Council Of Student Governments |
| OCSP | Online Certificate Status Protocol |
| OCTAA | On Campus Talking About Alcohol (alcohol education program; various universities) |
| OCTE | Office of Career and Technical Education |
| OCTE | Oklahoma Council of Teachers of English |
| OCTE | Oregon Council of Teachers of English |
| OCTEC | Orange County Tobacco Education Coalition |
| OCTM | Ohio Council for Teachers of Mathematics |
| OCTM | Ohio Council of Teachers of Mathematics |
| OCTM | Oklahoma Council of Teachers of Mathematics |
| OCTM | Oregon Council of Teachers of Mathematics |
| OCTS | Oxford Center for Teaching and Scholarship |
| ODA | Out-of-Door Academy |
| ODBE | Oxford Diocesan Board of Education |
| ODBE | Oxford Diocese Board of Education |
| ODCE | Ohio Digital Commons for Education |