| Abbreviation | Definition |
|---|---|
| CSFD | Czecho-Slovak Film Database (Cesko-Slovenská filmová databáza) |
| CSI | Complex Specified Information |
| CSLD | Cross strait language database |
| CSMD | Controlled Substance Monitoring Database |
| CSP | Client Side Paradata |
| CSS | Cyber Security Systems |
| CT | Class Type |
| CTA | Common Table Authorized |
| CTD | Collecting Taxes Database |
| CTD | Comparative Toxicogenomic Database |
| CTD | Comparative Toxicogenomics Database |
| CTDB | Compact Terrain Data Base |
| CTE | Common Table Expression |
| CTED | Clinical Trials Eligibility Database |
| CTID | Clinical Training Information Database |
| CTIRU | Counter-Terrorism Internet Referral Unit |
| CTOD | Clinical Trial Outcome Database |
| CU | Categorical Unit |
| CUD | Common User Database |
| CVA | Compiled Vertex Array |