| Acronym | Definition |
|---|
| ERSP | Electronic Retailing Self-Regulation Program |
| ERSP | Ente Regulador de los Servicios Públicos |
| ERSP | Environmental Remediation Sciences Program |
| ERSP | Evolution Robotics Software Platform |
| ERSP | Espace Régional de Santé Publique |
| ERSP | Eesti Rahvusliku Sõltumatuse Partei |
| ERSP | Edinburgh Ras Shamra Project |
| ERSP | event-related spectral perturbation |
| ERSP | Eragrostis spectabilis (purple lovegrass) |
| ERSP | Electronic Reservation Services Provider |
| ERSP | Economic Reforms Support Programme |
| ERSP | Energy Resource Surveys Program |
| ERSP | event-related spectral power |
| ERSP | En Route Spacing Program (aviation) |
| ERSP | event-related slow potential |
| ERSP | Evangelical Review of Society and Politics (religious journal) |
| ERSP | Ecological Reserve System Project (New Hampshire) |
| ERSP | Emergency Road Service Provider |
| ERSP | Eniwetok Radiological Support Project |