| Abbreviation | Definition |
|---|---|
| CSG | Client Server Guide |
| CSI | Chinese System Interface |
| CSIM | Client Side Image Map |
| CSL | Corrupt Serveradmin Ladder |
| CSM | Call Switching Module |
| CSMA/CA | Carrier Sense Multiple Access with Collision Avoidance |
| CSMACD | Carrier Sense Multiple Access Collision Detect |
| CSME | Customized Switched Metro Ethernet |
| CSN | Compaq Services Network |
| CSNET | Computer Science NETwork |
| CSNT | Computer Systems and Networking |
| CSP | Client Server Protocol |
| CSP | Cluster Server Package |
| CSP | Communicating Sequential Processes |
| CSPDN | Circuit Switched Public Data Network |
| CSPF | CMU/Stanford Packet Filter |
| CSPF | Constrained Shortest Path First |
| CSR | Cell Switching Router |
| CSR | Central System Router |
| CSR | Certificate Signing Request |