| Campus Crusade for Christ International | Academic & Science |
| Campus Climate Culture and Inclusion | Academic & Science |
| Continental Choice Care | Business |
| Centro Colegial Cristiano, Inc. | Business |
| California Community College Independents | Community |
| Connecticut Community Care Inc | Community |
| Center for Cyber Communities Initiative | Community |
| Concerned Citizens Community Involvement | Community |
| California Construction Community Institute | Community |
| Children's Cross Connection International | Community |
| Certified Computer Crime Investigator | Computing |
| Centrul Pentru Combaterea Crimelor Informatice | Computing |
| Cornell Contemporary China Initiative | General |
| Center for Compassion Creativity and Innovation | General |
| Campaign Contribution Concentration Index | General |
| Convention Center Cartagena de Indias | General |
| California Construction Cost Index | General |
| Canopy Content Chlorophyll Index | General |
| Cleveland, Columbus, Cincinnati and Indianapolis | General |
| Canopy Chlorophyll Content Index | General |
| Classic Chevy Club International | General |
| Chevy Classic Club Indonesia | General |
| Classic Car Club Illawarra | General |
| Canopy Chlorophyl Content Index | General |
| Cross Cultural Communication Institute | Governmental |
| Central Criminal Court of Iraq | Governmental |
| Cyprus Chamber of Commerce and Industry | Governmental |
| Centre For Cyber Crime Investigation | Governmental |
| Chittagong Chamber of Commerce and Industries | Governmental |
| Chittagong Chamber of Commerce & Industry | Governmental |
| Carbon Capture and Conversion Institute | Governmental |
| Cities and Climate Change Initiative | Regional |
