Euthymia may refer to:
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Euthymia (medicine), a calm mental state in psychology and psychiatry
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Euthymia (philosophy), a concept in philosophy
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Euphrosyne (mythology) or Euthymia, a Greek goddess
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''Euthymia'' (grasshopper), a genus of grasshoppers in the subfamily
Hemiacridinae
The HemiacridinaeDirsh VM (1956) The phallic complex in Acridoidea (Orthoptera) in relation to taxonomy. ''Transactions of the Royal Entomological Society of London'' 108 '': 223-356. are a subfamily of Acrididae in the Orthoptera: Caelifera. S ...
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