| Abbreviation | Definition |
|---|---|
| IRIS | Integrated Resource Information System |
| IRIS | Interactive Rendering and Image Segmentation |
| IRIS | Internet Rapid Installer for Software |
| IRP | Incident Resolution and Prevention |
| IRP | Internet Relay Programming |
| IRSP | Intelligent Robot Software Platform |
| IRUS | Irvine Research Unit in Software |
| ISAC | Immuno-Solid phase Allergy Chip ( |
| ISAM | Internet Server Application Module |
| ISAPI | Information Server Application Programming Interface |
| ISAPI | Internet Server Application Programming Interface |
| ISAPI | Internet Server Applications Programming Interface |
| ISAPI | Internet Server Appliction Programming Interface |
| ISAPI | Internet Server Appliction Programming Interfaceisapi |
| ISAPI | Internet Services Application Programming Interface |
| ISAT | Interim Software Acceptance Test |
| ISB | Internet Space Builder |
| ISB1 | Internet Space Builder version 1 |
| ISB2 | Internet Space Builder version 2 |
| ISB3 | Internet Space Builder version 3 |