| Acronym | Definition |
|---|
| IRRB➣Institutional Research Review Board (National-Louis University) |
| IRRB➣International Red River Board (est. 2001; International Joint Commission) |
| IRRB➣Integrated Requirements Review Board |
| IRRB➣Italian Registry of Renal Biopsies (nephrology) |
| IRRB➣Infrastructure Requirements Review Board |