| Acronym | Definition |
|---|
| IRSE➣Indian Railway Service of Engineers (India) |
| IRSE➣Institute of Railway Signal Engineers |
| IRSE➣Istituto Regionale Studi Europei (Italian: Regional Institute for European Studies) |
| IRSE➣Inversion Recovery Spin Echo (magnetic resonance imaging) |
| IRSE➣Interferon-Responsive Sequence Element (gastric tumors) |