| Abbreviation | Definition |
|---|---|
| IULS | Integrated Update of Legacy Systems |
| IUO | Inquire Users Object |
| IUP | Installed User Program |
| IUS | Integrated Utility Services |
| IUS | Interchange Unit Separator |
| IUSO | Internet User Supporting Organisation |
| IUT | Implementation Under Test |
| IV | Integrated Vignette |
| IVD | Interactive Video Disc |
| IVE | Immersed Virtual Environment |
| IVG | Interactive Voice Guide |
| IVR | Interactive Virtual Reality |
| IVR | Interactive Voice Recognition |
| IVRS | Interactive Voice Response System |
| IWB | Innovation WorkBench |
| IWB | Interactive Whiteboard |
| IWK | InformationWeeK |
| IWS | Integrated Work Station |
| IWS | Intelligent WorkStation |
| IWWWC | International World Wide Web Conference |