| Abbreviation | Definition |
|---|---|
| COM | Component Object Model |
| COMPAS | Correctional Offender Management Profiling for Alternative Sanctions |
| COSMOS | Cluster Of Systems of Metadata for Official Statistics |
| COSMOS | Customer Operations Service Master On-line System |
| CPBD | Children's Picture Book Database |
| CPCD | Canadian Patient Cost Database |
| CPID | Consumer Product Information Database |
| CPRD | Clinical Practice Research Datalink |
| CRAQ | Chain Replication with Apportioned Queries |
| CRIP | Content, Relationship, Identity, and Process |
| CRIT | Common Resource Information Table |
| CROSS | Customs Rulings Online Search System |
| CRSD | composite regulatory signature database |
| CRSS | Crash Report Sampling System |
| CRUD | Create, Retrieve, Update, Delete |
| CSCD | California School Campus Database |
| CSCD | Chinese Science Citation Database |
| CSD | Controlled Substance Database |
| CSDB | Common Source Data Base |
| CSF | Character-Separated Fields |