| Abbreviation | Definition |
|---|---|
| ICNI | Integrated Communications Navigation and Identification |
| ICNI | Internal Communication Network Installation |
| ICNP | International Conference on Network Protocols |
| ICON | Improving Connectivity in ONtario |
| ICP | Internet Cache Protocol |
| ICP | Internet Caching Protocol |
| ICPC | International Cable Protection Committee |
| ICRA | Internet Content Rating Association |
| ICRT | Input Channel Reference Table |
| ICS | Information Collaboration Site |
| ICS | Inter Cluster Separation |
| ICS | Interface To Content Server |
| IDA | Installation Design Authority |
| IDA | Interface for Distributed Automation |
| IDC | Interim Domain Controller |
| IDC | Internet Database Connector |
| IDC | Internet Direct Connection |
| IDD | Internet Data Distribution |
| IDE | Interdependent Data Exchange |
| IDEA | International Data Encryption Algorithm |