| Competitive Pricing Advisory Committee | Business |
| Consumer Planning Advisory Committee | Business |
| Citywide Parent Advisory Committee | Business |
| Civilian Personnel Advisory Centers | Business |
| Care Planning and Advisory Council | Business |
| Consumer Prices Advisory Committee | Business |
| Consumer Protection Advisory Committee | Business |
| Cal Poly Accounting Club | Business |
| Cataloging Policy Advisory Committee | Business |
| Classified Personnel Advisory Committee | Business |
| Compact Particle Acceleration Corporation | Business |
| Center for Process Analytical Chemistry | Chemistry |
| Ctcenter for Process Analytical Chemistry | Chemistry |
| Colorado Photographic Arts Center | Community |
| Carpenter Performing Arts Center | Community |
| Colorado Potato Administrative Committee | Community |
| Collaborative Pesticides Analytical Committee | Community |
| Community Participation Advisory Committee | Community |
| Community Partnership for Arts and Culture | Community |
| Community Policy Analysis Center | Community |
| Conservative Political Action Conference | Community |
| Centre Press Accreditation Committee | Community |
| Christian Partners Against Communism | Community |
| The Creative And Performing Arts Community | Community |
| Creative Performing Arts Community | Community |
| Columbia Performing Arts Centre | Community |
| Christian Performing Arts Center | Community |
| Cookeville Performing Arts Center | Community |
| Cedarburg Performing Arts Center | Community |
| Cosmological Physics and Advanced Computing | Computing |
| Cambridge Planck Analysis Centre | General |
| Conservative Politicians Attempting Comedy | General |
| Confused Paranoid Ancient Conservatives | General |
| Connecticut Parent Advocacy Center | General |
| Corrosion Prevention And Control | General |
| California Program on Access to Care | General |
| Castle Point Anime Convention | General |
| Crazy People Acting Childish | General |
| Consolidated Patient Account Center | General |
| Corn Peas and Carrots | General |
| Crazy People Against Change | General |
| Conservatives Preaching At Choir | General |
| Common Practical Assessment Criteria | General |
| Crazy People Are Coming | General |
| Combined Public Access Catalogue | General |
| Cakes Pies Almond Cookies | General |
| Conservative People Are Crazy | General |
| California Performance Assessment Collaborative | General |
| CT Parent Advocacy Center | General |
| Community Planning Advocay Council | Governmental |
| Contingency Planning Association of the Carolinas | Governmental |
| Community Planning and Advocacy Council | Governmental |
| Conservative Political Action | Governmental |
| Conservative Political Action Committee | Governmental |
| Conservative Political Action Confrence | Governmental |
| Counterfeit Political Action Conservatives | Governmental |
| Civilian Police Accountability Council | Governmental |
| Citizens Police Accountability Council | Governmental |
| Chicago Police Accountability Council | Governmental |
| Central Pharmaceutical Affairs Council (Japan) | Governmental |
| Criminal politicians and corporations | Governmental |
| Casa Pia Atlético Clube Portuguese Clube | International |
| Comisión Permanente de la Asamblea de Cataluña | International |
| Conservative Political A** Clowns | Internet |
| Clinical Priority Access Criteria | Medical |
| Clinical Pharmacology Analytical Core | Medical |
| Canadian Partnership Against Cancer | Medical |
| Civilian Personnel Advisory Center | Military and Defence |
| Cable Public Affairs Channel | Regional |
| College Park Aquatic Club | Sports |
| Cavalier Pride Athletic Center | Sports |
| Central Plains Athletic Conference | Sports |
