Mastuj is a town and Tehsil of Chitral District in Khyber-Pakhtunkhwa province of Pakistan.
Mastuj is one of the most beautiful towns in the Chitral District.
It is located at 36°17'0N 72°31'0E with an altitude of 2359 metres (7742 feet).
Mastuj is located on the way to Shadur from Chitral. The road to this place is mostly dirt-road.
There are ruins of old fort built originally in 18th century and re constructed later couple of times.
The fort is situated on a plateau at confluence of the Yarkhun River and the Mastuj River near Shandur Pass.
The fort is believed to be built by Katoor Dynasty in 18th century in around 1780 with couple of rebuilds in 1830 and 1920s.
The main villages include Buni, Mastuj,Khuzh, kargin, Marthing, Chuinj, Parkusap, Reshun, Parwak, Kuragh and Aveer.
Tehsil Mastuj starts right after the end of Baranis, Reshun, Kuragh, Buni, Aveer, Parwak, Mastuj, Chinar, Chuinj, Chapali, Kargin and Khuzh are the main and beautiful place of Tehsil Mastuj.
The population of Mastuj, according to 2017 census was 169,240.