Kanchanpur District, a part of Sudurpashchim Province in the Terai plain, is one of seventy-seven districts of Nepal. The district, with Bhimdatta as its district headquarters, covers an area of 1,610 square kilometres (620 sq mi) and had a population of 134,868 in 2001 and 171,304 in 2011. It is located in south-western of Nepal. It is bordered by Kailali district in the east, Dadeldhura district in the north and with India in the south and west.

Sudurpashchim Province is one of the seven provinces established by the new constitution of Nepal which was adopted on 20 September 2015. It borders the Tibet Autonomous Region of China to the north, Karnali Province and Lumbini Province to the east, and India's states of Uttarakhand and Uttar Pradesh to the west and south, respectively. The province covers an area of 19,539 km2, or about 13.22% of the country's total area.