| Abbreviation | Definition |
|---|---|
| IRP | Innovation Research Program |
| IRP | Intramural Research Program |
| IRP | Intramural Research Programs |
| IRPA | Institutional Research Planning Assessment |
| IRPA | Intensification of Research in Priority Areas |
| IRPE | Institute for Research on Presidential Elections |
| IRPE | Institutional Research Planning and Effectiveness |
| IRPE | Institutional Research Planning Effectiveness |
| IRPI | Investigative Reporting Project Italy |
| IRR | Institutional Research and Reporting |
| IRRA | Institutional Repositories and Research Assessment |
| IRRAD | Institute Of Rural Research and Development |
| IRRC | Illinois Research And Retrieval Center |
| IRRC | Interdisciplinary Research Regional Conference |
| IRRC | Iowa Reading Research Center |
| IRRC | Irrigated Rice Research Consortium |
| IRRDB | International Rubber Research Development Board |
| IRRE | Institute for Research and Reform in Education |
| IRRF | Integrated Road Research Facility |
| IRRG | Illinois Renewable Resources Group |