| Abbreviation | Definition |
|---|---|
| OGT | Operation Game Thief |
| OHIM | Office for Harmonization in the Internal Market |
| OHLS | Osgoode Hall Law School |
| OIBM | Opportunity International Bank of Malawi |
| OIC | Offer In Compromise |
| OINL | Obedience Is Not Legalism |
| OIPM | Office of Intellectual Property Management |
| OJ | Obstruction of Justice |
| OJ | Orange Jumpsuit |
| OJA | Office of Judicial Administration |
| OJA | Office of Juvenile Affairs |
| OJA | Office of the Judicial Administrator |
| OJARS | Office of Justice Assistance Research and Statistics |
| OJB | Overcoming Jury Bias |
| OJC | Office for Judicial Complaints |
| OJC | Ohio Judicial Conference |
| OJC | Orphan Justice Center |
| OJD | Oregon Judicial Department |
| OJE | Organization for Justice and Equality |
| OJG | O. J. Guilty |