Alalcomenae or Alalkomenai (Ancient Greek: Ἀλαλκομέναι), or Alalcomenium or Alalkomenion (Ἀλαλκομένιον), was a town in ancient Boeotia, situated at the foot of Mount Tilphossium, a little to the east of Coroneia, and near Lake Copais. It was celebrated for the worship of Athena, who was said to have been born there, and who is hence called Alalcomeneis (Ἀλαλκομενηΐς) in Homer's Iliad. The temple of the goddess stood, at a little distance from the town, on the , a small stream flowing into Lake Copais. The town was by a hill which Strabo calls Mount Tilphossium (named for Telphousa, the spring visited by the god Apollo). Strabo also records that the tomb of the seer Teiresias, and the temple of Tilphossian Apollo, were located just outside Alalcomenae.