Halae Aexonides or Halai Aixonides, also known as Aexonides Halae or Aixonides Halai, was a deme of ancient Attica, a little south of Aexone. It derived its name from its salt-works. Its surname distinguishes it from Halae Araphenides. Its most important sanctuary was Temple of Apollo Zoster, ruins of which remain in modern Vouliagmeni.