Phthia (disambiguation)

Phthia was a region in ancient Greece; the home of the mythical Myrmidons

It can also refer to:
 * In Greek mythology: see Phthia (mythology)
 * Phthia, one of the Niobids
 * Phthia, mother of Dorus, Laodocus and Polypoetes by Apollo
 * Phthia or Clytia, concubine of Amyntor
 * Phthia, daughter of Phoroneus
 * In ancient history:
 * Phthia of Epirus, the mother of Pyrrhus of Epirus
 * Phthia of Macedon, a granddaughter of Pyrrhus of Epirus
 * Other:
 * 189 Phthia, an asteroid
 * Phthia (bug), a genus of leaf-footed bug