| Rank | Abbreviation | Meaning |
|---|
| ***** | IARP | Impact of Agricultural Research on Poverty
| |
| ***** | IARP | Inverse Address Resolution Protocol
| |
| ***** | IARP | International Association of Rehabilitation Professionals
| |
| **** | IARP | International Association of Reiki Professionals
| |
| *** | IARP | International Amateur Radio Permission
| |
| *** | IARP | International Association of Reiki Practitioners
| |
| *** | IARP | Indian Association for Radiation Protection
| |
| *** | IARP | International Advanced Robotics Programme
| |
| *** | IARP | International Association of Rehabilitation Providers
| |
| *** | IARP | Izba Architektów Rzeczypospolitej Polskiej
| |
| ** | IARP | International Amateur Radio Permit
| |
| ** | IARP | Independent Abuse Review Panel
| |
| ** | IARP | Integrated Auricular Reconstruction Protocol
| |
| * | IARP | Illinois Archeologic Resource Potential
| |
| * | IARP | Illinois Association of Railroad Passengers
| |
| * | IARP | International Association for Religion and Parapsychology
| |
| * | IARP | Iowa Association of Railroad Passengers
| |
| * | IARP | Integrated Assessment Research Program
| |
| * | IARP | International Atmospheric Research Program
| |
| * | IARP | Intrazone Routing Protocol
| |
| * | IARP | Italian Association for Radiation Protection
| |
| * | IARP | Institutional Assessment Research and Planning
| |
| * | IARP | Iraqi American Reconciliation Project
| |
| * | IARP | Idiopathic Acute Recurrent Pancreatitis
| |
| * | IARP | International Advanced Robotic Program
| |