| Abbreviation | Definition |
|---|---|
| IETF | Internet Engineering Task Force |
| IETM | Interactive Electronic Technical Manual |
| IETP | Initial Entry Training Program |
| IETP | Interactive Electronic Technical Publication |
| IETV | Interoperability Experimentation, Testing, and Validation |
| IEW | Integrated Electronic Warfare |
| IEW | Intelligence and Electronic Warfare |
| IEWCOMCAT | Intelligence and Electronic Warfare Character-Oriented Message Catalog |
| IEWCOMDED | Intelligence and Electronic Warfare Character-Oriented Message Data Element Dictionary |
| IEWCS | Integrated Electronic Warfare Common Sensor |
| IEWFA | Intelligence and Electronic Warfare Functional Area |
| IEWS | Integrated Electronic Warfare Suite |
| IEWS | Intelligence and Electronic Warfare System |
| IEWSE | Intelligence and Electronic Warfare Support Element |
| IEWTD | Intelligence and Electronic Warfare Test Directorate |
| IEWTPT | Intell and Electronic Warfare Tactical Proficiency Trainer |
| IF | Intelligence Fusion |
| IF | Iraqi Freedom |
| IF | Iron Fist |
| IFAK | individual first aid kit |