Tanahun District, a part of Gandaki Province, is one of the seventy-seven districts of Nepal. The district lies in central Nepal, with Damauli as its district headquarters. It covers an area of 1,546 km2 (597 sq mi) and has a population (2011) of 323,288. Previously the town of Bandipur was its district headquarter. The postal code of Tanahun is 33900.

Gandaki Province ), is one of the seven federal provinces established by the current constitution of Nepal which was promulgated on 20 September 2015. Pokhara is the province's capital city. It borders the Tibet Autonomous Region in Southwest China to the north, Bagmati Province to the east, Karnali Province to the west, and Lumbini Province and Bihar of India to the south. The total area of the province is 21,504 km2 - constituting 14.57% of Nepal's total area. According to the latest census, the population of the province was 2,479,745. The newly elected Provincial Assembly adopted Gandaki Province as the permanent name by replacing its initial name Province No. 4 on 27 April 2023. Surendra Raj Pandey is the present chief minister of Gandaki Province.