Erda

Erda may refer to:


 * Earth
 * Erda, Utah
 * Elastic recoil detection analysis
 * Erda or Urðr, often confused with the goddess Jörð, in Richard Wagner's opera cycle Der Ring des Nibelungen (The Ring of the Nibelung)
 * Energy Research and Development Administration
 * El Rostro de Analía (Analia's Face), a Spanish-language telenovela produced in United States
 * 894 Erda