Perrhidae or Perrhidai () was a deme of ancient Attica, probably in the neighbourhood of Aphidna. Perrhidae, together with Aphidna, Titacidae, and Thyrgonidae, are said to have been removed from the phyle of Aeantis to another tribe.Harpocr. s. v. Θυργωνίδαι. Perrhidae is described as a deme in Aphidna.Hesych. Phavor. δῆμος ἐν Ἀφίδναις
Its site is unlocated.
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