Kohistan District, also known as Indus Kohistan (Kohistani: سندھُ کوستَیں) and Hazara Kohistan, was a district within the Hazara Division of Khyber Pakhtunkhwa, Pakistan. Consisting of eastern portion of the larger Kohistan region, it was bifurcated into two districts in 2014: Upper Kohistan and Lower Kohistan. In 2017, the Lower Kohistan District was further bifurcated and a district Kolai-Palas was established. It has an area of 7,492 square kilometres (2,893 sq mi) and a population of 472,570 according to the 1998 Census.
Geographically, Kohistan stretched from Gilgit-Baltistan in the north to the Mansehra District in the east to the Battagram District and Shangla and Swat districts in the west.