Ersa is a figure in Greek mythology.

Ersa may refer to:

• Ersa, Haute-Corse – a commune of the Haute-Corse department of France, on the island of Corsica
• Ersa (moon) - a small moon of Jupiter
• Ersa GmbH, a subsidiary of Kurtz Holding GmbH & Co. Beteiligungs KG for the manufacturing of equipment for electronic production.

• European Regional Science Association (ERSA) – the European section of the Regional Science Association International
• En Route Supplement Australia (ERSA) – part of the Aeronautical Information Publication (AIP) published by Airservices Australia
• Economics Research South Africa (ERSA)

• Erza (disambiguation)
• Ursa (disambiguation)

This disambiguation page lists articles associated with the title Ersa.
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