| Product Change Over | Academic & Science |
| Punta Colorada | Airport Code |
| Project Control Officer | Business |
| Pennsylvania Certified Organic's | Business |
| Professional Career Opportunities | Business |
| Playcore, Inc. | Business |
| Pioneer Cooperative Organization | Business |
| Paradox Computers Online | Business |
| Professional Convention Organizers | Business |
| Photo Catalytic Oxidation | Chemistry |
| Professional Conference Organization | Community |
| Professional Conference Organizer | Community |
| Population and Community | Community |
| Peabody Chamber Orchestra | Community |
| Penguin Cafe Orchestra | Community |
| Population and Community Ontology | Community |
| Peabody Concert Orchestra | Community |
| Pre-defined Composition Object | Computing |
| Point of Control and Observation | Computing |
| Product Change Order | Computing |
| Private Cable Operator | Computing |
| Pennsylvania College of Optometry | Educational Institute |
| Plastic Closure Only | General |
| Parkinson Center of Oregon | General |
| Public Call Outlet | General |
| Private Coverage Option | General |
| Procurement Contracting Officer | General |
| Private Carriage Officers | General |
| Paediatric Care Online | General |
| Provisional Constitutional Order | General |
| Presidential Campaign Organisation | General |
| Pre coin offering | General |
| Primary Care Offices | General |
| Please Carry On | General |
| Pressure Controlled Orifice | General |
| Parking Control Officer | General |
| Professional Congress Organizer | General |
| Potential Change Order | General |
| Proposed Change Order | General |
| Public Carriage Office | General |
| Precombustion Chamber Oil | General |
| Passenger Car Oil | General |
| Passenger Car Operator | General |
| Product Component | General |
| Porsche Club Ortenau | General |
| Porsche Centre Oakville | General |
| Putnam City Optimist | General |
| Police Car Only | General |
| Primary Care Office | General |
| Planning Center Online | Governmental |
| Police Communications Operators | Governmental |
| Partido da Causa Operária | Governmental |
| Parliamentary Counsel Office | Governmental |
| Provisional Constitution Order | Governmental |
| PALAYANKOTTAI | Indian Railway Station |
| Pest Control Operator | Jobs |
| Professional Conference Organiser | Jobs |
| Precinct Committee Officer | Jobs |
| Prospective Commanding Officer | Jobs |
| Posterior Capsular Opacification | Medical |
| Personal Care Options | Medical |
| Posterior Capsule Opacification | Medical |
| Pulp Canal Obliteration | Medical |
| Patient Choice Organization | Medical |
| Patient Complains Of .... | Medical |
| Physician Controlled Organization | Medical |
| Posterior Capsular Opacity | Medical |
| Potassium Channel Opener | Medical |
| Primary Care Organization | Medical |
| Procuring Contracting Office | Military and Defence |
| Program Contracting Officer | Military and Defence |
| Projects & Contracting Office | Military and Defence |
| Primary Control Officer | Military and Defence |
| Protocol Configuration Options | Networking |
| Potter County Outfitters | Regional |
| Punta Colorada, Mexico | Regional |
| Privy Council Office | Regional |
| Portal Configuration Object | Softwares |
| Post-checkout Operations | Space Science |
| Procuring Contracting Officer | Space Science |
| Program Controlled Output | Space Science |
| Public Call Office | Telecommunication |
| Public Calling Office | Telecommunication |
| Punta Colorada Airstrip | Transport & Travel |