| Crary Science and Engineering Center | Academic & Science |
| Campus Student Election Commission | Academic & Science |
| Customer Service Excellence Corporation | Business |
| California Self Esteem Conference | Community |
| Computerized Self-Evaluation Checklist | Community |
| Connecticut State Employees Campaign | Community |
| Catholic Strengths and Engagement Community | Community |
| Cyber Security Education Consortium | Community |
| Chicago Sunday Evening Club | Community |
| Civil Society Education Coalition | Community |
| Computer Science Engineers Community | Community |
| Cyber Security Experience Centre | Computing |
| Cyber Security Evaluation Centre | Computing |
| Caribbean Secondary Education Certificate | Educational Degree |
| Colorado Springs Early Colleges | Educational Institute |
| Commission on State Emergency Communications | General |
| Commercially Sexually Exploited Children | General |
| Communications Security Establishment CSE | General |
| Construction Science and Engineering Center | General |
| Commercial Sexual Exploitation of Children | Governmental |
| Civil Society Empowerment Centre | Governmental |
| Child Support Enforcement Council | Governmental |
| Comprehensive Sustainable Energy Committee | Governmental |
| Commissione della Scienza, dell'Educazione e della Cultura | International |
| Corporate Specialist Education Committee | Medical |
| Clinical Skills Evaluation Collaboration | Medical |
| Clinical Study Evaluation Committee | Medical |
| Communications Security Establishment Canada | Military and Defence |
