| Acronym | Definition |
|---|
| IRSS➣Infrared Supression System |
| IRSS➣Indiana Registry of Soil Scientists (West Lafayette, IN) |
| IRSS➣Information & Resource Support System |
| IRSS➣Infrared Search System |
| IRSS➣Investor Responsibility Support Services (Media, PA) |
| IRSS➣International Relations and Security Studies (various universities) |
| IRSS➣Integrated Requirements Supply System |
| IRSS➣Instant Recall Storage System |
| IRSS➣Integrated Reliability Software Suite |
| IRSS➣Infrared Signature Suppression System |
| IRSS➣Ingersoll-Rand Security and Safety |
| IRSS➣Indian Railways Stores Service |
| IRSS➣Instrumentation and Range Safety System (US Air Force) |
| IRSS➣International Russian-Speaking Squad |
| IRSS➣Integrated Range Status System |