| Acronym | Definition |
|---|
| IRMM➣Institute for Reference Materials and Measurements (Belgium) |
| IRMM➣Institute of Reference Materials and Measurements |
| IRMM➣Integrated Removable Media Manager (IBM) |
| IRMM➣Indian Railway Medical Manual (employment standards guidelines; South Eastern Railway; Kharagpur, India) |
| IRMM➣Internal Risk Management Models |