Perithoedae or Perithoidai (Ancient Greek: Περιθοῖδαι) was a deme of ancient Attica, of the phyle Oineïs; it provided three delegates to the Athenian Boule.
The site of Perithoedae is located in the Kephisos valley, west of modern Athens.
37°59′45″N 23°40′38″E / 37.995961°N 23.677348°E