| Abbreviation | Definition |
|---|---|
| CMN | Community Media Network |
| CMNA | Certified Meraki Networking Associate |
| CMP | Certificate Management Protocol |
| CMR | Critical Message Rate |
| CMS | Central Monitoring Station |
| CMS | Corporate Messaging Solution |
| CMTS | Cable Modem Terminating System |
| CMTS | Cable Modem Termination System |
| CMU | Communications Management Unit |
| CN | Canonical Name |
| CN | Container Name |
| CN | Context Node |
| CNA | Cisco Network Accessory |
| CNAD | Calling NAme Delivery |
| CNC | Configurable Network Computing |
| CNEC | Cybersecurity and Network Communications |
| CNET | Computer Network |
| CNI | Container Networking Interface |
| CNIP | Cellular Networking Integration and Processing |
| CNLPT | Certified Nero Linguistics Program Trainer |