EOST may refer to:
*
Ecole et Observatoire des Sciences de la Terre
The ''École et Observatoire des Sciences de la Terre'' () is a French institution under the supervisory authority of the University of Strasbourg and thCNRS-INSU(National Center for Scientific Research, National Institute of Science of Univers ...
, a French school and Observatory
*
The Ecstasy of Saint Theresa (band), a Czech dance music band active 1990–present
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