Mahakali (Nepali: महाकाली अञ्चल Listenⓘ) was one of the fourteen zones located in the Far-Western Development Region of Nepal, covering an area of 7449.28 km2 in the westernmost part of the country.

The zone covers the Himalayan range including Api Peak in the North, Hill valleys, Inner Terai valleys such as Patan Municipality in Baitadi District in the center and the outer Terai in the South.

The largest city in the Mahakali Zone is Bhimdatta (or Bhim Datta, formerly called Mahendranagar), which is also the headquarters of Kanchanpur District.

Other main towns of Mahakali Zone are Dashrathchand, Patan (Baitadi) and Darchula Bajar.

The Amargadhi, the district headquarters, is named after General Amarshing Thapa (a famous Gorkha General) who formed a fort to expand Gorkha Empire capturing Kumaoun state after had defeated in a previous war with Kumaoun during 1790 A.D. Rajghat is also a famous city of Kanchanpur District.