| Rank | Abbreviation | Meaning |
|---|
| ***** | IRPP | Institute for Research on Public Policy
| |
| **** | IRPP | Institute on Religion and Public Policy
| |
| *** | IRPP | Impôt Sur Le Revenu des Personnes Physiques
| |
| *** | IRPP | Independent Renewable Power Producer
| |
| *** | IRPP | Ionizing Radiation Protection Program
| |
| ** | IRPP | Industrial Readiness Planning Program
| |
| * | IRPP | Implantation Rate per Pregnant Patient
| |
| * | IRPP | Inter Regional Participation Process
| |
| * | IRPP | Integrated Relocation Program Pilot
| |
| * | IRPP | Institute for Research on Public Policies
| |
| * | IRPP | Inter Refineries Pipelines Project
| |
| * | IRPP | Integrated Rehabilitation Project Plan
| |
| * | IRPP | Intensive Rice Production Program
| |
| * | IRPP | Integrated Relocation Pilot Project
| |
| * | IRPP | Integrated Rural Policy Package
| |
| * | IRPP | Intellectually Retarded Persons Project
| |
| * | IRPP | Instream Resource Protection Program
| |
| * | IRPP | Indian River Power Plant
| |
| * | IRPP | Indian Radon Pilot Projects
| |
| * | IRPP | Interdisciplinary Rural Placement Program
| |
| * | IRPP | International Radio Programming and Promotions
| |
| * | IRPP | Isinglass River Protection Project
| |
| * | IRPP | Institutional Repositories Pilot Project
| |
| * | IRPP | Improved Reporting to Parliament Project
| |