| Complete Partial Orders | Academic & Science |
| College of Psychologists of Ontario | Academic & Science |
| Campus Police Officer | Academic & Science |
| Center for Prosthetics and Orthotics | Academic & Science |
| Climate Program Office | Academic & Science |
| Conditional Purchase Order | Accounts and Finance |
| Confirmation of Purchase Order | Accounts and Finance |
| Copiapo | Airport Code |
| China Philharmonic Orchestra | Arts |
| Cleveland Philharmonic Orchestra | Arts |
| Chelsea Pitch Owners | Associations & Organizations |
| Certificates of Ordinary Participation | Business |
| Complete Partial Order | Business |
| Chief People Officer | Business |
| Contour Parallel Offset | Business |
| Complete Pre-Order | Business |
| Compulsory Purchase Order | Business |
| Certified Pre-owned Program | Business |
| Client Purchase Order | Business |
| Certified Professional Organizers | Business |
| Certified Practitioner of Oversight | Business |
| Certified Procurement Officer | Business |
| Corn Products International, Inc. | Business |
| Commerce Placement Office | Business |
| Christian Publishers Outlet | Business |
| Cyprus Pharmaceutical Organization | Business |
| Community Properties of Ohio | Business |
| Certified Project Officer | Business |
| Chief Product Officer | Business |
| Certified Pre Owned | Certifications |
| Certified Professional Organizer | Certifications |
| Certified Professional of Occupancy | Certifications |
| Certified Pool Operators | Certifications |
| Christian Peace Officer | Community |
| Christian Publicity Organization | Community |
| Calgary Philharmonic Orchestra | Community |
| Capital Punishment Organization | Community |
| Community Planning Organization | Community |
| Clean Pool Owner | Community |
| Community Programs Office | Community |
| Czech Philharmonic Orchestra | Community |
| Community Project Organization | Community |
| Center for Prevention and Outreach | Community |
| Community Participation Organization | Community |
| Community Participation Organizations | Community |
| Culture Philippines of Ontario | Community |
| Classic Production Osnabrueck | Community |
| Call if Parity Odd | Computing |
| Computer Printout | Computing |
| Computer Peripherals Operation | Computing |
| Cost Per Order | Computing |
| Cost Per Open | Computing |
| Cryptopolis | Cryptocurrency |
| College Programming Office | Educational Institute |
| Corel Print House File | File Type |
| Citizen Participation Organization | General |
| Citizen Participation Organizations | General |
| Chief Procurement Officer | General |
| Card Production Ordered | General |
| Commodity Pool Operators | General |
| Ceritifed Pre Owned | General |
| Class Persistence Object | General |
| Customer Payment Order | General |
| Curtis Parent Organization | General |
| Customer Purchase Order | General |
| Code of PLM Openness | General |
| Core Project Office | General |
| Corrections Program Office | General |
| Cargill Process Optimizer | General |
| Catalytic Particulate Oxidizer | General |
| Customer Preferred Option | General |
| Customer Parts Operations | General |
| Club Porsche de l'Ouest | General |
| Charge Point Operator | General |
| Certified Protection Officer | General |
| Corporate Project Office | General |
| Cambarellus Patzcuarensis Orange | General |
| Cash Product Office | General |
| Central Purchasing Office | General |
| Converting Perimeter Opportunities | General |
| Community Post Office | General |
| Crude Palm Oil | General |
| Cool People Organization | General |
| Civil Police Officer | Governmental |
| Chief Performance Officer | Governmental |
| Court Protective Order | Governmental |
| Civil Protection Order | Governmental |
| Chicago Post Office | Governmental |
| Country Policy Operations | Governmental |
| Chief Petty Officer Navy | Governmental |
| Capital Projects Office | Governmental |
| Court of Public Opinion | Governmental |
| Conservation Police Officer | Governmental |
| Correctional Peace Officer | Governmental |
| Community Punishment Orders | Governmental |
| Crime Prevention Officer | Governmental |
| City Police Officer | Governmental |
| Central Police Organization | Governmental |
| Central Police Organisation | Indian Ministry of Home Affairs Organization |
| Certified Pool Operator | Jobs |
| Commodity Pool Operator | Jobs |
| Chief Process Officer | Jobs |
| Certified Park Operator | Jobs |
| Chief Propaganda Officer | Jobs |
| Chief Privacy Officer | Jobs |
| Chief Professional Officer | Jobs |
| Chief Petting Officer | Jobs |
| Correctional Probation Officer | Jobs |
| Center for Prevention Outreach | Medical |
| Cleft Palate Only | Medical |
| Chest Pain Observation | Medical |
| Cardiogenic Pulmonary Oedema | Medical |
| Certified Prosthetist/Orthotist | Medical |
| Contract Packaging Organizations | Medical |
| Chief Pharmaceutical Officer | Medical |
| Complete Provisions Only | Military and Defence |
| Civilian Personnel Office | Military and Defence |
| Chief Petty Officer | Military and Defence |
| Chemical Protective Overgarment | Military and Defence |
| Classic Produktion Osnabrück | News & Entertainment |
| Copiapo, Chile | Regional |
| Capital Planning Overview | Space Science |
| Chamonate Airport | Transport & Travel |
