| Campus Center for Appropriate Technology | Academic & Science |
| Canadian Cognitive Abilities Test | Academic & Science |
| Complete Computer Accounting Team | Business |
| Computer Consultancy And Training | Business |
| Creative Community Access TV | Community |
| Carver Community Access Television | Community |
| Center Of Cinematography Arts And Television | Community |
| Common Carrier Association for Telecommunications | Community |
| Creative Community Access Television | Community |
| Connecticut Center for Advanced Technology | Computing |
| Center for Commercialization of Advanced Technology | Computing |
| Clear Creek Applied Technologies | Computing |
| Carver Center for Arts and Technology | Computing |
| Center for Computer Analysis of Texts | Computing |
| Cambridgeshire College of Arts and Technology | Computing |
| Cdma Card Application Kit | Computing |
| Contiguous Concatenation | Computing |
| Computer Crash Analysis Tool | Computing |
| Core Capacity Assessment Tool | General |
| Collateral Consequences Assessment Tool | General |
| Connected Components Accelerator Toolkit | General |
| Conglutinating Complement Absorption Test | General |
| Chick Cell Agglutination Test | General |
| Cornell Caltech Atacama Telescope | General |
| Cadet Centre for Adventurous Training | General |
| Clinical Considerations in Aeromedical Transport | General |
| Cerro Chajnantor Atacama Telescope | General |
| Criteria Cognitive Aptitude Test | General |
| Colorado College Alternative Transportation | Governmental |
| Commerce Classification Automated Tracking | Governmental |
| Center for Connected Automated Transportation | Governmental |
| Climate Change Action Team | Governmental |
| Career Criminal Apprehension Team | Governmental |
| Coos County Area Transit | Regional |
