Editing ERP

{{Wiktionary|ERP}}
'''ERP''' or '''Erp''' may refer to:
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==Economics==
* [[Effective rate of protection]], of tariffs
* [[Equity risk premium]], excess return on risky investments
* [[European Recovery Program]] or Marshall Plan

==Science and technology==
* [[Effective radiated power]], of directional radio transmission
* [[Electronic Road Pricing]], in Singapore
* [[Enterprise resource planning]], a business process system

===Medicine===
* [[Effective refractory period]], in a cardiac cycle
* [[Estrogen receptor positive]], a cancer pathology test result
* [[Event-related potential]], a measured brain response
* [[Exposure and response prevention]], a treatment method in behavioral therapy
* [[OspE/F-like related protein]], in Lyme disease microbiology

==Places==
* [[Erp, Ariège]], a village in France
* [[Erp (Germany)]], a village
* [[Erp, Netherlands]], a town

==Other uses==
* [[Erp (Pict)]], father of Drest I of the Picts
* [[Ejército Revolucionario del Pueblo (disambiguation)|''Ejército Revolucionario del Pueblo'' (disambiguation)]], (Spanish for People's Revolutionary Army), several Latin American communist or socialist organizations
* [[Energy-related products]], that use or affect energy consumption
* [[Erotic role-playing]], the use of role-playing in sexual or romantic contexts

==See also==
* [[Van Erp]], a Dutch surname
* [[D'Erp Castle]], Baarlo, Limburg, Netherlands
* [[Ethernet Ring Protection Switching]] (ERPS), used in Ethernet networks
* [[Earp (disambiguation)]]

{{disambiguation|geo}}