Paraetacene (Παραιτακηνή) was a district of ancient Persis which extended along the whole of its northern frontier in the direction of Media Magna, to which, indeed, it in part belonged. The name is first mentioned by Herodotus, who calls one of the tribes of the Medians Paraetaceni. The same district comprehended what are now called the Bakhtyari mountains and tribes. The whole country was rugged and mountainous and appears to have been inhabited, like the adjacent province of Cossaea, by wild and robber tribes. The inhabitants were called Paraetaceni or Paraetacae.