Dera Allah Yar (Urdu: ڈیرہ اللہ یار) is a city and the headquarters of the Jaffarabad District located in Balochistan, Pakistan. It is situated at the distance of 300 km from provincial capital Quetta. The city formerly was known as Jhatpat. The city was named after the assassination of their Political Leader Mir Allahyar Khan Khosa.