Pashtun Zarghun District (Pashto: پښتون زرغون ولسوالی / Persian: ولسوالی پشتون زرغون), formerly known as Posht-e Zirghān[2] or Posht-e Zirghūn (Persian: پشت زرغون), is situated in the central part of Herat Province, Afghanistan in the valley of the Hari River. The district center is Pashtun Zarghun.