- Erp is in Norse mythology one of Gudrun and Jonakr's sons
- Erp is a village in the Netherlands which, since 1994 merged with the town of Veghel, can be found in the province of Noord-Brabant.
- Erp is a fictional wizard created by Ed Wynne of Ozric Tentacles for the album Erpland. The album describes the life of Erp, and from that album onward Erp is depicted in many of Ozric Tentacles records.
- Enterprise resource planning systems (ERPs) are management information systems that integrate and automate many of the business practices associated with the operations or production aspects of a company. ERP systems typically handle the manufacturing, logistics, distribution, inventory, shipping, invoicing, and accounting for a company. Enterprise Resource Planning or ERP software can aid in the control of many business activities, like sales, delivery, billing, production, inventory management, and human resources managment.
- ERP is the abbreviation for the European Recovery Plan, more commonly known as the Marshall Plan
- Effective radiated power (ERP) is a term used in radio communications for calculating the power of a communications system in terms of its gains and losses.
