| Abbreviation | Definition |
|---|---|
| ODCR | Office of Diversity and Civil Rights |
| ODCR | Oklahoma District Court Records |
| OFLA | Oregon Family Leave Act |
| OGPA | Open Governmental Proceedings Act |
| OHASA | Occupational Health and Safety Act |
| OLAD | Office of Legislation Analysis and Disclosure |
| OLAD | Office of Legislative Analysis and Disclosure |
| OLC | Office of Legislative Counsel |
| OLO | Office of Legislative Oversight |
| OLPA | Office of Legislative and Public Affairs |
| OLS | Office of Legislative Services |
| OPA | Oil Pollution Act |
| OPLA | Office of Public and Legislative Affairs |
| OPPL | Office of Policies Procedures and Legislation |
| OPRA | Obsolete Property Rehabilitation Act |
| OPRL | Office of Policy Research and Legislation |
| ORA | Open Records Act |
| OSCOLA | Oxford Standard for the Citation Of Legal Authorities |
| OSHA | A Omnibus Safety And Hygiene Act |
| OSHA | Occupational Safety Hazards Act |