| Center for Software Systems Research | Academic & Science |
| Centre for Social Science Research | Academic & Science |
| Center for Social Science Research | Academic & Science |
| Center for Social Services Research | Academic & Science |
| Center for the Study of Science and Religion | Academic & Science |
| Collective for Social Science Research | Academic & Science |
| Climate Science Special Report | Academic & Science |
| Career Success Standards Rating system | Business |
| Customer Sales Service Representative | Business |
| Certified Social Sourcing Recruiter | Business |
| Consolidated Stock Status Report | Business |
| Congregatio Sanctissimi Redemptoris | Community |
| Councils with Social Services Responsibility | Community |
| Center for Secondary School Redesign | Community |
| Comprehensive Services and School Readiness | Community |
| Catholic Social Science Review | Community |
| Community Standards and Student Responsibility | Community |
| Communications Systems Segment Replacement | Computing |
| Comet Surface Sample Return | General |
| Communications System Segment Replacement | General |
| Conservaive site specific recombination | General |
| Conservative site specific recombination | General |
| Context Structure Sound Reference | General |
| Creative and Scholarly Saluki Rookies | General |
| Centre for Social Studies and Reforms | General |
| Cost Schedule Status Report | General |
| Call Setup Success Rate | General |
| Customer Service and Sales Representative | General |
| Collapsed Structure Search and Rescue | General |
| Call Setup Success Ratio | General |
| Cold Start Spark Retard | General |
| Central Server for Statistical Reporting | Governmental |
| Council with Social Service Responsibilities | Governmental |
| Council of Societies for the Study of Religion | Governmental |
| Commissaryman Seaman Recruit | Governmental |
| Canadian Soviet Socialist Republic | Governmental |
| Czech and Slovakia Socialist Republic | Governmental |
| ČeskoSlovenská Socialistická Republika | Regional |
| Canadian Society for the Study of Rhetoric | Regional |
| Canadian Society for the Study of Religion | Regional |
