| IIRP | Improved Item Replacement Program 
| Others |
| IIRP | Industry Institution Research Partnership
| Others |
| IIRP | Institute for Intersectionality Research and Policy
| Others |
| IIRP | International Institute For Restorative Practices
| Others |
| IIRP | International Internship Recruitment Program
| Others |
| IIRP | Internet Information Resource Page
| Others |
| IIRP | Investigator Initiated Research Projects
| Others |
| IIRP | Iraq Infrastructure Reconstruction Program
| Others |
| IIRP | Iraq Infrastructure Reconstruction Programme
| Others |