Isthmia

Isthmia may refer to:


 * Isthmia (sanctuary) at the east side of the Isthmus of Corinth, Greece
 * The ancient Isthmian Games, held at the sanctuary
 * Temple of Isthmia, located in the sanctuary


 * Isthmia, Corinthia, a village in the municipal unit Loutraki-Perachora, Corinthia, Greece, near ancient Isthmia
 * Isthmia (genus), a genus of diatom in the Coscinodiscophyceae subclass