| Abbreviation | Definition |
|---|---|
| IOT&E | Internal Operational Test and Evaluation |
| IOTV | Improved Outer Tactical Vest |
| IOWG | Information Operations Working Group |
| IP | Image Processing |
| IP | Implementation Procedure |
| IP | Informal Processing |
| IP | Information Processor |
| IP | Initial Point |
| IP | Initial Point (bombing) |
| IP | Initial Position |
| IP | Initial Production |
| IP | Instructor Pilot |
| IP | Intelligence Processing |
| IP | Internal Protocol |
| IP | International Patrol |
| IP | Internet Protocol |
| IPA | Integrated Program Assessment |
| IPA | Intelligence Production Agency |
| IPA | International Programs Acquisition |
| IPA | Issue Position Argument |