Law Abbreviations and Acronyms
- OSCOLAOxford Standard Citation of Legal Authorities
- OSHAOccupational Safety and Health Acts
- OSHAOccupation Safety and Health Act
- OSHABOccupational Safety & Health Appeals Board
- OSHRCOccupational Safety and Health Review Commission
- OSHRCOccupational Safety & Health Review Commission
- OSIOpen Society Institute
- OSJAOffice of The Staff Judge Advocate
- OSJCLOhio State Journal of Criminal Law
- OSJIOpen Society Justice Initiative
- OSLTCOffice of State, Local, and Tribal Coordination
- OSPAOutstanding Security Performance Awards
- OSPASOutstanding Security Performance Awards
- OSPIWashington Office of The Superintendent of Public Instruction
- OSSSOOffice of Security Strategy and Special Operations
- OTEDWashington Office of Trade & Economic Development
- OTJAGOffice of The Judge Advocate General
- OTLAOntario Trial Lawyers Association
- OTLAOregon Trial Lawyers Association
- OTOOrdo Templi Orientis
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