| Abbreviation | Definition |
|---|---|
| IICWG | International Interoperability Control Working Group |
| IIM | Intelligence Information Management |
| IIOS | Integrated Information Operation Strategy |
| IIP | Bureau of International Information Programs (DOS) |
| IIP | Intelligence Interface Processor |
| IIP | Interagency Implementation Plan |
| IIP | International Information Program |
| IIP | Interoperability Improvement Program |
| IIPB | International Islamic Peacekeeping Brigade |
| IIPB | Islamic International Peacekeeping Brigade |
| IIR | Imagery Interpretation Report |
| IIR | Imaging Infrared |
| IIR | Intelligence Information Report |
| IIR | Intermediate Information Requirement |
| IIRGCAF | Iranian Islamic Revolutionary Guards Corps Air Force |
| IIS | Inter-vehicular Information System |
| IIS | Irish Intelligence Services |
| IITV | Image Intensifying Television |
| IJA | Imperial Japanese Army |
| IJAAF | Imperial Japanese Army Air Force |