| Abbreviation | Definition |
|---|---|
| IMD | Integrated Motor Drive |
| IMFL | India Made Foreign Liquor |
| IMI | Integrated Micro Instrument |
| IMIS | Integrated Measuring and Information System |
| IMP | International Marine Products |
| IMRC | Intake Manifold Runner Control |
| IMU | Initial Markup |
| IMVC | Induction Motor Vector Control |
| INIT | Initial |
| INPWT | Incisional negative pressure wound therapy dressings |
| INRS | Impact Noise Reduction System |
| INRTFLR | Inert Filler |
| INS | Interchangable-Substitute Item |
| INSP | INSPection |
| INTEL | INtegrated TElecommunication Light |
| INV | Invention |
| IO | Inboard Outboard |
| IO | Intermittent Operation |
| IOCD | Initial Opacity Compliance Demonstration |
| IOCU | International Organization of Consumers Unions |