ERDA may refer to:
- Erda, Utah
- Elastic Recoil Detection Analysis (an analytical technique). Erda is a Census-designated place (CDP in Tooele County, Utah, United States. Elastic Recoil Detection is a nuclear technique in Materials science to obtain elemental concentration depth profiles in thin films Synonym of ERD
- A name for Jörð in Richard Wagner's Der Ring des Nibelungen (The Ring of the Nibelung)
- Energy Research and Development Administration. In Norse mythology, Jörð ( Old Norse "earth" jɔrð Jarð jɑrð in Old East Norse --> sometimes Anglicized as Jord Der Ring des Nibelungen ( The Ring of the Nibelung) is a cycle of four epic Music dramas by the German composer The United States Energy Research and Development Administration ( ERDA) was a United States government organization formed from the split of the Atomic Energy In 1977, ERDA became the United States Department of Energy. The United States Department of Energy ( DOE) is a Cabinet -level department of the United States government responsible for energy policy
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