| Abbreviation | Definition |
|---|---|
| cromp | Compact Remote Object Model Platform |
| CROSS | Core Router Operating System Support |
| CRR | Continuous Remote Replication |
| CRS | Carrier Router System |
| CRS | Cell Relay Service |
| CRS | Customer Requirement Specification |
| CRS-1 | CISCO Carrier Router System 1 |
| CRT | Computer Resource Teacher |
| CS | Cluster Size |
| CS | Concurrent Session |
| CS | Connect Server |
| CSB | Corrects System Backup |
| CSB | Count Sub-Block |
| CSC | Client Side Caching |
| CSD | Circuit Switched Data |
| CSD | Cooperative Services Directory |
| CSE | Clustered System Environment |
| CSFG | Computer Science Facilitation Group |
| CSFN | Chicago Southland Fiber Network |
| CSFW | Cricket Statistics for Windows |