| Acronym | Definition |
|---|
| OPC | Orthodox Presbyterian Church |
| OPC | OLE for Process Control (OLE = Object Linking and Embedding) |
| OPC | Optical Proximity Correction |
| OPC | Office de la Protection du Consommateur |
| OPC | Opel Performance Center (Germany) |
| OPC | Ordinary Portland Cement |
| OPC | Ocean Prediction Center (US NOAA) |
| OPC | Origination Point Code |
| OPC | Optimum Power-Control (CDMA) |
| OPC | Optimum Power Calibration (optical writing technology) |
| OPC | Optical Particle Counter |
| OPC | Originating Point Code |
| OPC | Oligomeric Proanthocyanidin (antioxidant/antiinflamatory) |
| OPC | Ontario Prevention Clearinghouse |
| OPC | Operation Complete |
| OPC | Organic Photo-Conductor (Hewlett Packard toner technology) |
| OPC | Oodua Peoples Congress |
| OPC | Overseas Press Club of America |
| OPC | Ontario Police College |
| OPC | Odua Peoples Congress |
| OPC | Oligodendrocyte Precursor Cell |
| OPC | Office of Public Counsel |
| OPC | Operation Provide Comfort |
| OPC | Offshore Patrol Cutter |
| OPC | Office of the Protective Commissioner (Australia) |
| OPC | Optical Photoconductor |
| OPC | One-Point-Cut (glass ampoules, medical packaging) |
| OPC | Operations Controller |
| OPC | Objective Performance Criteria |
| OPC | Optimum Picture Control (Sony) |
| OPC | Operations Planning & Control (IBM) |
| OPC | Ovamboland People's Congress |
| OPC | Own Point Code |
| OPC | Other Project Costs |
| OPC | Outdoor Pursuits Club |
| OPC | Other Peoples' Code |
| OPC | Onstar Personal Calling |
| OPC | Output Port Controller |
| OPC | Organisme de Placements Collectifs (Finance) |
| OPC | Opinion of Probable Cost |
| OPC | Oklahoma Pork Council |
| OPC | Office of Public Correspondence (Treasury Department) |
| OPC | Operation Committee (IATA) |
| OPC | Operation Process Chart |
| OPC | Other People's Cigarettes |
| OPC | Oilfield Production Consultants Ltd |
| OPC | Ontario Provincial Committee (Air Cadet League of Canada) |
| OPC | Orientation Planning Committee |
| OPC | Oracle Precompiler |
| OPC | Oficiul Pentru Protecþia Consumatorilor (Romanian: Office for Consumer Protection) |
| OPC | On Phone Call |
| OPC | Office of Primary Concern |
| OPC | Ocean Processing Center |
| OPC | Oakhurst Petanque Club (Oakhurst, CA) |
| OPC | Odstock Parish Council |
| OPC | Oligarchy Peep Contingent |
| OPC | Oligoprocyanidin (specific type of antioxidant) |
| OPC | Optical Physics Corporation |
| OPC | Organizational Point of Contact |
| OPC | Optimal Prefix Code |
| OPC | Office Protestant de la Communication |
| OPC | Oscillator Power Control |
| OPC | Outlining Process Chart |
| OPC | Onnuree Presbyterian Church |
| OPC | Overflow Priority Classification |
| OPC | Optimum Performance Capable (aircraft is fully mission capable) |
| OPC | Open Proxy Connection |
| OPC | Organisation, Planification, and Control |
| OPC | Open Link Exchange for Process Control |