| Acronym | Definition |
|---|
| IBSR➣Institut Belge pour la Sécurité Routière |
| IBSR➣International Bariatric Surgery Registry (formerly National Bariatric Surgery Registry) |
| IBSR➣Internet Brain Segmentation Repository (online database; Center for Morphometric Analysis; Massachusetts General Hospital) |
| IBSR➣Integrated Billing Storage and Retrieval |
| IBSR➣Inquiry Based Stress Reduction (behavioral health system) |
| IBSR➣Individual Battle Shooting Range (British Army) |