| China Petroleum and Chemical Corporation | Academic & Science |
| Chevron Phillips Chemical Company | Academic & Science |
| Central Piedmont Community College | Academic & Science |
| Center for Pervasive Communications and Computing | Academic & Science |
| Center for Photonic Communication and Computing, Northwestern University | Academic & Science |
| Certified Professional Career Coach | Business |
| Certified Professional Co Active | Business |
| Carolina Polo and Carriage Company | Business |
| Chiswick Pier Canoe Club | Community |
| Cigarette Packet Collectors Club | Community |
| Conference Program Coordinating Committee | Community |
| Canadian Private Copying Collective | Community |
| Crisis Pregnancy Counseling Center | Community |
| Cyber Physical Cloud Computing | Computing |
| Center for Photonic Communication and Computing | Computing |
| Cameron Park Corvette Club | General |
| Central Pennsylvania Corvette Club | General |
| Crown Point Corvette Club | General |
| Central Pennsylvania Corvair Club | General |
| Checkered Past Car Club | General |
| Certified Professional Coactive Coach | General |
| Cast-in-Place Concrete Caisson | General |
| Central Plateau Cleanup Contract | General |
| Communication in Peace Conflict in Communication | General |
| Copyright Protection Centre of China | General |
| Complex Potential Close Coupling | General |
| Citizen Police Complaint Commission | Governmental |
| Civilian Planning and Conduct Capability | Governmental |
| Canadian Peacebuilding Coordinating Committee | Governmental |
| Comité Promejoramiento Cantón Chunimá | International |
| Chicago Prostate Cancer Center | Medical |
