ERP
- D'Erp Castle
- Earp (disambiguation)
- Effective radiated power
- Effective rate of protection
- Effective refractory period
- Ejército Revolucionario del Pueblo (disambiguation)
- Electronic Road Pricing
- Energy-related products
- Enterprise resource planning
- Equity risk premium
- Erotic role-playing
- Erp (Germany)
- Erp (Pict)
- Erp, Ariège
- Erp, Netherlands
- Estrogen receptor positive
- Ethernet Ring Protection Switching
- European Recovery Program
- Event-related potential
- Exposure and response prevention
- OspE/F-like related protein
- Van Erp