| Acronym | Definition |
|---|
| IRAD | Institute of Agricultural Research for Development (Cameroon) |
| IRAD | Illinois Regional Archives Depository (Northeastern Illinois University) |
| IRAD | International Registry of Acute Aortic Dissection |
| IRAD | Independent Research And Development |
| IRAD | Internal Research and Development |
| IRAD | Institut de Recherche Agricole pour le Developpement (Cameroon) |
| IRAD | Industry Research and Development |
| IRAD | Institut de Recherches Appliquées du Dahomey (French: Dahomey Institute of Applied Research, Benin) |
| IRAD | Implantable Renal Assist Device (artificial kidney) |
| IRAD | IBM Rational Application Developer |
| IRAD | Iterative Rapid Application Development |
| IRAD | Involuntary Release from Active Duty |
| IRAD | Institute of Registration Agents and Dealers |
| IRAD | Imotong Ranges Association for Development |
| IRAD | International RPN Appreciation Day (celebrating Reverse Polish Notation) |