Mastuj (Urdu: مستوج) is a tehsil and a valley in Upper Chitral District in Khyber Pakhtunkhwa province of Pakistan.

There are ruins of old fort built originally in 18th century and reconstructed several times.

[2][3] The main villages include Buni, Charun-Oweer,[4] Mastuj, Khouzh, Kargin, Marthing, Chuinj, Parkusap, Reshun, Parwak, Kuragh, Aveer, Chapali and Brep.

[5] Media related to Mastuj tehsil at Wikimedia Commons

This Upper Chitral District location article is a stub.