Frataraka (Aramaic: Prtkr’𐡐𐡓𐡕𐡊𐡓’, "governor", or more specifically "sub-satrapal governor")[4][5] is an ancient Persian title, interpreted variously as “leader, governor, forerunner”.[6] It is an epithet or title of a series of rulers in Persis from 3rd to mid 2nd century BC, or alternatively between 295 and 220 BC,[7] at the time of the Seleucid Empire, prior to the Parthian conquest of West Asia and Iran. Studies of frataraka coins are important to historians of this period.[8]