| Term | Full Form | Category |
|---|---|---|
| IRBA | Independent Regulatory Board for Auditors | Others |
| IRBA | Independent Regulatory Board for Auditors (South Africa) | Others |
| IRBA | Internal Ratings Based Approach | Others |
| IRBA | International Reptile Breeders' Association | Others |
| IRBA | International Ripple Business Association | Others |
| IRBA | Ireland Russia Business Association | Others |