| Acronym | Definition |
|---|
| IRSP➣Irish Republican Socialist Party |
| IRSP➣Instrumentation Radar Support Program |
| IRSP➣Interdisciplinary Relationship Science Program (University of California, Los Angeles) |
| IRSP➣Infrared Scene Projector |
| IRSP➣Intramural Research Support Program |
| IRSP➣International Review of Social Psychology (Association for the Diffusion of International Research in Social Psychology) |
| IRSP➣In-Place Readiness Spares Package (US DoD) |