| Abbreviation | Definition |
|---|---|
| CSLD | Cambridge Student Liberal Democrats |
| CSP | Country Strategy and Program |
| CSPG | Center for the Study of Political Graphics |
| CSPG | Center for the Study of Politics and Governance |
| CSPI | Center for the Study of Political Islam |
| CSPT | Centre for Social and Political Thought |
| CSPT | Cultural Social and Political Thought |
| CSPT | Cultural Social Political Thought |
| CSSR | Canadian Soviet Socialist Republic |
| CSSR | Czech and Slovakia Socialist Republic |
| CSU | Christlich-Soziale Union (Christian Social Union (of Bavaria)) |
| CSVL | Childrens Services Voters League |
| CSVL | Church and State Voters League |
| CSVN | Đảng Cộng Sản Việt Nam |
| CTA | Call To Action |
| CTGA | Connecticut General Assembly |
| CTR | Central Texas Republican |
| CTRA | Central Texas Republican Assembly |
| CTRC | Cheltenham Township Republican Committee |
| CTRW | Central Texas Republican Women |