| Acronym | Definition |
|---|
| IRM | Information Rights Management |
| IRM | Information Resources Management |
| IRM | Information Resources Management (College; National Defense University; Washington, DC) |
| IRM | Information Risk Management |
| IRM | Illinois Railway Museum |
| IRM | Institute of Risk Management |
| IRM | Information Resource Manager |
| IRM | Imagerie par Résonnance Magnétique (French: Magnetic Resonance Imagery) |
| IRM | Institut Royal Météorologique de Belgique (Belgium's Royal Metereological Institute) |
| IRM | Institute for Regenerative Medicine |
| IRM | Institute of Rural Management |
| IRM | Immune Response Modifier |
| IRM | Inherited Rights Mask |
| IRM | Interference Reflection Microscopy |
| IRM | Inspection, Repair, Maintenance |
| IRM | Integrated Resources Management |
| IRM | Information Resources Management Plan (HFCA) |
| IRM | Image Rejection Mixer |
| IRM | Independent Reference Model |
| IRM | Integrated Resistance Management |
| IRM | Islamic Resistance Movement (aka Hamas) |
| IRM | Impossible Recording Machine (band) |
| IRM | International Roaming MIN |
| IRM | Internet Reservation Module |
| IRM | In-Lined Reference Monitoring |
| IRM | Insurance for Released Members (Canada) |
| IRM | Institute of Respiratory Medicine (Australia and Malaysia) |
| IRM | Integrated Resource Management, LLC (Claremont, California) |
| IRM | Intelligence Requirements Management |
| IRM | Interactive Rights Management Ltd |
| IRM | Information Release Memo |
| IRM | Initial Ranging Message |
| IRM | Immediate Remedial Measures (environment) |
| IRM | Impulse Radio Modulation |
| IRM | Interim Release Milestone |
| IRM | International Review of Management (Senate Hall Academic Publishing) |
| IRM | Information Request Message |
| IRM | Intramural Research Program (NIH) |
| IRM | Ion Release Module |
| IRM | Interim Remedial Measure |
| IRM | Internal Revenue Manual |
| IRM | International Revolutionary Movement |
| IRM | Internet Relationship Management |
| IRM | Isochronous Resource Manager (IEEE 1394) |
| IRM | Isothermal Remanent Magnetization |
| IRM | Item Response Model |
| IRM | Integrated Risk Management |
| IRM | Investor Relationship Management |
| IRM | Indicative Route Method (path planning) |
| IRM | Immediate Restorative Material |