| Acronym | Definition |
|---|
| OPG | Osteoprotegerin |
| OPG | Ontario Power Generation (Canada) |
| OPG | Office of the Public Guardian (various locations) |
| OPG | Output Gain |
| OPG | Object Programmer'S Guide |
| OPG | Online Policy Group |
| OPG | Okinawa Prefectural Government (Japan) |
| OPG | Official Police Garage (Los Angeles, CA) |
| OPG | Office of the Paymaster General (UK) |
| OPG | Oldroyd Publishing Group (UK) |
| OPG | Organisms per Gram (measurement) |
| OPG | Orthopantomography |
| OPG | Official Pistol Gang |
| OPG | Old Portuguese |
| OPG | Office of Projects and Grants (Collumbia University) |
| OPG | Organizational Process Group |
| OPG | Ocean Physics Group (various locations) |
| OPG | Operations Planners Group |
| OPG | Order Processing Guideline (Hewlett-Packard) |
| OPG | Operation Planning Group |
| OPG | Official Pricing Guide |
| OPG | Operational Performance Goals |
| OPG | Off-Line Power-Aware Greedy Algorithm (computer energy consumption) |
