Atrax ( , or Ἄτραγϕϛ Supplementum Epigraphicum Graecum 34.560.3 450 BCE) or Ἄτρακοϛ ) or Atracia (Ἀτρακία) was a Perrhaebian town in ancient Thessaly, described by Livy as situated above the river Peneius, at the distance of about 10 miles from Larissa.