Mahakoshal (also Mahakaushal) is a region of central India. Mahakoshal lies in the upper or eastern reaches of the Narmada River valley in the Indian state of Madhya Pradesh. Jabalpur is the largest city in the region. Nimar region lies to the west, in the lower reaches of the Narmada valley. The Vindhya Range forms the northern boundary of the region; north of the Vindhya Range lie the regions of Malwa to the northwest, Bundelkhand to the north, and Bagelkhand to the northeast. Chhatisgarh state lies to the east, and the Vidarbha region of Maharashtra state lies to the south across the Satpura Range.