| Abbreviation | Definition |
|---|---|
| ICG | Intelligence Convergence Group |
| ICG | Interagency Core Group |
| ICG | Interface Control Group |
| ICH | Improved Cargo Helicopter |
| ICIS | Integrated Communication And Information System |
| ICIS | Integrated Consumable Item Support |
| ICITAP | International Crime Investigative Training Assistance Program (DOJ) |
| ICM | Image City Map |
| ICM | Improved Conventional Munitions |
| ICM | Increased Capability Missile |
| ICM | Integrated Collection Management |
| ICM | Intelligence Collection Management |
| ICM | Intelligence Correlation Module |
| ICMM | International Committee of Military Medicine |
| ICMM | International Committee on Military Medicine |
| ICMP | Internet Control Message Protocol |
| ICN | Idle Channel Noise |
| ICN | Interface Control Document |
| ICN | Interface Control Net |
| ICN | Interim Change Notice |