ERP or Erp may refer to:
Economics
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Effective rate of protection, of tariffs
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Equity risk premium, excess return on risky investments
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European Recovery Program or Marshall Plan
Science and technology
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Effective radiated power
Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would ha ...
, of directional radio transmission
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Electronic Road Pricing, in Singapore
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Enterprise resource planning
Enterprise resource planning (ERP) is the integrated management of main business processes, often in real time and mediated by software and technology. ERP is usually referred to as a category of business management software—typically a suit ...
, a business process system
Medicine
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Effective refractory period, in a cardiac cycle
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Estrogen receptor positive, a cancer pathology test result
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Event-related potential
An event-related potential (ERP) is the measured brain response that is the direct result of a specific sense, sensory, cognition, cognitive, or motor system, motor event. More formally, it is any stereotyped electrophysiology, electrophysiologi ...
, a measured brain response
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Exposure and response prevention, a treatment method in behavioral therapy
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OspE/F-like related protein, in Lyme disease microbiology
Places
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Erp, Ariège, a village in France
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Erp (Germany), a village
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Erp, Netherlands, a town
Other uses
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Erp (Pict), father of Drest I of the Picts
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''Ejército Revolucionario del Pueblo'' (disambiguation), (Spanish for People's Revolutionary Army), several Latin American communist or socialist organizations
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Energy-related products, that use or affect energy consumption
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Erotic role-playing, the use of role-playing in sexual or romantic contexts
See also
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Van Erp, a Dutch surname
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D'Erp Castle, Baarlo, Limburg, Netherlands
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Ethernet Ring Protection Switching (ERPS), used in Ethernet networks
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Earp (disambiguation)
{{disambiguation, geo