| Abbreviation | Definition |
|---|---|
| InGaN | Indium Gallium Nitride |
| InGaP | Indium Gallium Phosphide |
| INLO | in-situ LO |
| INM | Integrated Noise Model |
| INNI | Israeli National Nanotechnology Initiative |
| INP | Impulse Noise Protection |
| InP | Indium Phosphide |
| INR | Interference-to-Noise Ratio |
| INS | Inter-station Noise Suppression |
| InSb | Indium Antimonide |
| INSECT | Information Network Social Electric City Transporter |
| INSUL | INSULation |
| IOC | Impedance Of Circuit |
| IOCB | Input/Output Control Block |
| IOCZ | Input/Output, CMOS levels, Tri-stateable |
| IOM | In/Out Module |
| IOPS | Input/Output Per Second |
| IP | Imaging Plate |
| IP | Inline Program |
| IP | Intellectual Property |