| OPP | O Propargyl Puromycin 
| Others |
| OPP | Object Push Profile
| Others |
| OPP | Occasional Parking Program
| Others |
| OPP | Octalis Planing Procedure
| Others |
| OPP | Ocular Perfusion Pressure
| Others |
| OPP | Off-Load Preparation Party
| Others |
| OPP | Office of Patient Protection
| Others |
| OPP | Office of Pesticide Programs
| Others |
| OPP | Office of Physical Plant
| Others |
| OPP | Office of Polar Programs
| Others |
| OPP | Office of Polar Programs at the National Science Foundation
| Others |
| OPP | Office of Professional Practice
| Others |
| OPP | Office of Public Prosecutions
| Others |
| OPP | Office of the Physical Plant
| Others |
| OPP | Official Party Poopers
| Others |
| OPP | Oglala Pet Project
| Others |
| OPP | One Penis Policy
| Others |
| OPP | One Policy Place
| Others |
| OPP | One Power Party
| Others |
| OPP | Online Privacy Policy
| Others |
| OPP | Online Privacy Protection
| Others |
| OPP | Ontario Pension Plan
| Others |
| OPP | Ontario Prov Police
| Others |
| OPP | Ontario Provincial Police
| Others |
| OPP | Open Pixel Project
| Others |
| OPP | Open Plan Presentation
| Others |
| OPP | Open Price Point
| Others |
| OPP | Open Public Pool
| Others |
| OPP | Opening Price Point
| Others |
| OPP | Operations Per Pixel
| Others |
| OPP | Opponent
| Others |
| OPP | Opportunity Plan Presentation
| Others |
| OPP | OPPosto
| Others |
| OPP | Optional Program Products
| Others |
| OPP | Oracle Partner Program
| Others |
| OPP | Oracle Promotional Partner
| Others |
| OPP | Order Pizza for Programmer
| Others |
| OPP | Orderwire Patch Panel
| Others |
| OPP | Organic Plant Preservative
| Others |
| OPP | Organizational Process Performance
| Others |
| OPP | Organizational Product Point
| Others |
| OPP | organophosphate pesticides
| Others |
| OPP | organophosphate poisoning
| Others |
| OPP | Oriental Paper Products
| Others |
| OPP | Orleans Parish Prison
| Others |
| OPP | Other People And Places
| Others |
| OPP | Other People's Products
| Others |
| OPP | Other People's Programs
| Others |
| OPP | Other People's Property
| Others |
| OPP | Other Peoples Problems
| Others |
| OPP | Other Peoples Projects
| Others |
| OPP | Other Peoples Property
| Others |
| OPP | Other Peoples' Products
| Others |
| OPP | Other Peoples' Programs
| Others |
| OPP | Other Pesticide Programs
| Others |
| OPP | Our Piece of the Pie
| Others |
| OPP | Out of Product Program
| Others |
| OPP | Out Put People
| Others |
| OPP | outpatient with procedure
| Others |
| OPP | Output Post Processor
| Others |
| OPP | Over Power Protection
| Others |
| OPP | Overnight Parking Permit
| Others |
| OPP | Overquota Products for Projects
| Others |
| OPP | Overseas Property Professional
| Others |
| OPP | Ovine Progressive Pneumonia
| Others |
| OPP | Oxford Psychologists Press
| Others |
| OPP | Oxford Psychology Press
| Others |
| OPP | Oxley Park Primary
| Others |
| OPP | Oxygen Partial Pressure
| Others |
| opp. | opposition
| Others |