The Diamir District is the district where the Karakoram Highway enters Gilgit-Baltistan from Pakistan's Khyber Pakhtunkhwa. The capital of the Diamir District is Chilas. The Diamir District is bounded by the Astore District in the east, the Khyber Pakhtunkhwa in the south and southwest (separated by the Babusar Pass or Babusar Top), the Darel District on the west, the Ghizar District in the north and northwest, and the Gilgit District in the north and northeast.