| Acronym | Definition |
|---|
| IRMS | Isotope Ratio Mass Spectrometry |
| IRMS | Innovative Risk Management Solutions (India) |
| IRMS | Information Resources Management Service |
| IRMS | Integrated Resource Management System |
| IRMS | Institute for Reproductive Medicine and Science (St. Barnabas Medical Center) |
| IRMS | Iraq Reconstruction Management System |
| IRMS | Indian Ridge Middle School |
| IRMS | Indian Railway Medical Service (India) |
| IRMS | Information Resources Management System |
| IRMS | Information and Records Management Society (UK) |
| IRMS | Information Resource Management Software |
| IRMS | Integrated Risk Management Strategy |
| IRMS | Investment and Risk Management in Shipping (conference) |