| IDRG | Infectious Disease Research Group 
| Others |
| IDRG | Inflammatory Disease Research Group
| Others |
| IDRG | insertion of dummy random Gaussian
| Others |
| IDRG | Institut des Dicziunari Rumantsch Grischun
| Others |
| IDRG | Institut Dicziunari Rumantsch Grischun
| Others |
| IDRG | Inter-Disciplinary Research Grant
| Others |
| IDRG | Interaction Design Reading Group
| Others |
| IDRG | International Data Responsibility Group
| Others |
| IDRG | International Development and Relief Group
| Others |
| IDRG | International Dispute Resolution Group
| Others |
| IDRG | Intrusion Detection Research Group, University of Houston
| Others |
| IDRG | Irish Dystonia Research Group
| Others |
| IDRG | Israeli Diabetes Research Group
| Others |