Mongar District is one of the 20 dzongkhags (districts) comprising Bhutan. Mongar is the fastest-developing dzongkhag in eastern Bhutan. A regional hospital has been constructed and the region is bustling with many economic activities. Mongar is noted for its lemon grass, a plant that can be used to produce an essential oil. It also has a hydroelectric power-plant on the Kuri Chhu river. Mongar is notable for having the longest work time in all the dzongkhags of Bhutan.

The Kingdom of Bhutan is divided into 20 districts. Bhutan is located between the Tibet Autonomous Region of China and India on the eastern slopes of the Himalayas in South Asia.