| Centre for Efficiency and Productivity Analysis | Academic & Science |
| Closer Economic Partnership Arrangement | Business |
| Center for Environmental Public Advocacy | Community |
| Center for Economic Policy Analysis | Community |
| Center for Educational Policy Analysis | Community |
| CEnter for the Protection of the Abused | Community |
| Center for Education Policy Analysis | Community |
| Cultural and Educational Programs Abroad | Community |
| Common Educational Proficiency Assessment | Community |
| Christian Educators Professional Association | Community |
| Committee of Experts on Public Administration | Community |
| Conservation Education Participation and Awareness | Community |
| Chesapeake Environmental Protection Association | Community |
| Childrens Educational Play Activity | Community |
| Communication Education And Public Awareness | Community |
| Can't Ever Protect Anything | General |
| Coupled Electron Pair Approximation | General |
| Connecticut Environmental Policy Act | Governmental |
| Commonwealth Environment Protection Agency | Governmental |
| Certified Exit Planning Advisor | Governmental |
| Conscientious Employee Protection Act | Governmental |
| Comprehensive Economic Profit Agreement | Governmental |
| Closer Economic Partnership Agreement | Governmental |
| Cambridge Economic Policy | Governmental |
| Centre for Environmental Policy and Advocacy | Governmental |
| Conscientous Employee Protection Act | Governmental |
| Closer Economic and Partnership Arrangement | Governmental |
| The Closer Economic Partnership Agreement | Governmental |
| Compañía Española de Penicilina y Antibióticos | International |
| Clinical Exercise Physiology Association | Medical |
| Canadian Environmental Protection Act | Regional |
| Comprehensive Economic Partnership Agreement | Regional |
| Canadian Energy Pipeline Association | Regional |
| Center for European Policy Analysis | Regional |