| Center for Equity and Student Achievement | Academic & Science |
| Concurrent Education Student Association | Academic & Science |
| Center for Ethnic Student Affairs | Academic & Science |
| Cyberspace Electronic Security Act | Academic & Science |
| Computational Engineering in Systems Applications | Academic & Science |
| Civil Engineering Student Association | Academic & Science |
| Chinese Engineering Students' Association | Academic & Science |
| Chinese Engineering Students' Association, University of Toronto | Academic & Science |
| Carolina Elite Soccer Academy | Academic & Science |
| CentOS Errata and Security Advisory | Business |
| Consulting Engineers South Africa | Business |
| Counselor Education Student Association | Community |
| College of Education Student Association | Community |
| Community of European Shipyards Associations | Community |
| Critical Ethnic Studies Association | Community |
| Continuing Education Sponsor Approval | Community |
| Church of England in South Africa | Community |
| Cooperative Educational Service Agency | Community |
| California Emergency Services Association | Community |
| Coverdell Education Savings Account | Community |
| Cooperative Educational Service Agencies | Community |
| Computer Entertainment Supplier's Association | Computing |
| Cryptographic Engine and Security Accelerator | General |
| Cisco Endpoint Security Analytics | General |
| Centre for Entomological Studies Ankara | General |
| Colegio de Estudios Superiores de Administración | General |
| Colorado Employment Security Act | Governmental |
| Council on Educational Standards and Accountability | Governmental |
| Clean Energy States Alliance | Governmental |
| California Energy Storage Alliance | Governmental |
| California Endangered Species Act | Governmental |
| Compañía Española de Sistemas Aeronáuticos | International |
| Canadian Engineering Standards Association | Regional |
| Central European Startup Awards | Regional |
| Centre for Elective Surgery at the Alfred | Regional |
| Controlled Emergency Swimming Ascent | Sports |
| Columbus East Soccer Association | Sports |
