IBRS
| Acronym | Definition |
|---|---|
| IBRS | International Business Reply Service (USPS) |
| IBRS | Internet Based Registration System |
| IBRS | Integrated Business Research Systems (UK) |
| IBRS | Intelligent Business Research Services Pty Ltd (Australia) |
| IBRS | Insane Black Rock Shooter (manga charcter) |
| IBRS | Intranuclear Beryllium-Rich Structures (cell biology) |
| IBRS | Incident Base Reporting System (law enforcement) |
| IBRS | Interview-Based Rating Scale (psychology) |
| IBRS | Intraoperative Blood Recovery System (cardiovascular surgery) |