| Abbreviation | Definition |
|---|---|
| ICUZ | Installation Compatible Use Zone |
| ICV | Infantry Combat Vehicle |
| ICVA | International Council of Voluntary Agencies |
| ICVT | Infantry Carrier Vehicle Team |
| ICW | In Coordination With |
| ICWAR | Improved Continuous Wave Acquisition Radar |
| ICWAR | mproved Continuous Wave Acquisition Radar |
| ICWG | Interface Control Working Group |
| ICWI | International Citizens' Weapons Inspectorate |
| ID | Identification |
| ID | Immediate Dominance |
| ID | Increased Deployability (Posture) |
| ID | Infantry Division |
| ID | Initiating Directive |
| ID/IQ | Indefinite Delivery/indefinite Quantity |
| IDA | Immediate Decision Act |
| IDA | Institute for Defense Analysis |
| IDAD | Internal Defense and Development |
| IDAS | Intrusion Detection Alarm System |
| I-DAY | (day Intelligence Indicators Are Recognized) |