| Campus Outdoor Pursuits and Activities | Academic & Science |
| Certificate Of Public Advantage | Business |
| Canadian Owners Pilots Association | Business |
| Cirrus Owners And Pilots Association | Business |
| Coalition of Photographic Arts | Community |
| Community On Patrol Application | Community |
| Control of Pollution Act | Community |
| Comité des Organisations Professionnelles Agricoles (in French) Committee of Agricultural Organizations | Community |
| Community Opportunity to Purchase Act | Community |
| Community Ownership of Power Administration | Community |
| Chapter Outstanding Performance Award | Community |
| Conservatory Of Puppetry Arts | Community |
| Computer Operator And Programming Assistant | Computing |
| Child Online Privacy Act | Computing |
| Cost of Power Adjustment | General |
| Campaign on Property Accountability | General |
| Coconut Olive Palm and Almond | General |
| Cambridge Online Preliminary Application | General |
| Child Outcome Planning Administration | General |
| Coconut Olive Palm Almond | General |
| Cloud Outage Payout Agreement | General |
| Chiropractors Osteopaths Physiotherapists Acupuncturists | General |
| Choice Of Plausible Alternatives | General |
| Change Order Price Analysis | General |
| Chronic Obstructive Pulmonary Affections | General |
| Comprehensive Objective Performance Assessment | General |
| Central Oklahoma Pontiac Association | General |
| Center On Policy Attitudes | General |
| California Organic Products Act | Governmental |
| Creepy Opportunist Parasites Assault | Governmental |
| Coalition on Political Assassinations | Governmental |
| Council on Postsecondary Accreditation | Governmental |
| Civilian Office of Police Accountability | Governmental |
| Children's Online Protection Act | Governmental |
| Committee On Political Action | Governmental |
| Children Online Protection Act | Governmental |
| Childs Online Protection Act | Governmental |
| Comité de Organizaciones Profesionales Agrícolas | International |
| Child Online Protection Act | Law |
| Committee of Agricultural Organizations in the European Union | Medical |
| Central Oregon Pediatric Associates | Medical |
| Canadian Owners and Pilots Association | Regional |
| Commonwealth of Pennsylvania | Regional |
| Canadian Office Products Association | Regional |
