Eupyridae or Eupyridai (Ancient Greek: Εὐπυρίδαι) was a deme of ancient Attica.
The site of Eupyridae is tentatively located near modern Kamatero.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Attica". Dictionary of Greek and Roman Geography. London: John Murray.
Coordinates: 38°03′59″N 23°42′41″E / 38.066469°N 23.711488°E / 38.066469; 23.711488