Butwal Sub-Metropolitan is one of the twin cities of rapidly growing Butwal-Bhairahawa urban agglomeration in Nepal. It lies in Province No. 5, Rupandehi District and also the interim capital of province 5 of Nepal. It is also home to the administrative headquarters of Lumbini Zone. This city stands beside the bank of Tilottama River Tinau River, and at the northern edge of the Terai plain below the Siwalik Hills. Its name, Butwal was derived from Batauli Bazaar, the town's oldest residential area which is located on the western bank of Tinau river. Butwal is a lively city comprising the Panoramic views of the combination of hills and plains.

Geographically, Butwal is at the intersection of Nepal's two different National Highways, Mahendra Highway and Siddhartha Highway. It connects western Nepal with the capital Kathmandu through highway and air links (via airport at Siddharthanagar). It is one of the fastest-growing cities in Nepal for education, infrastructure, highway, marketing, health and safety, communication, trade and banking sectors. It has highway connections to the Indian border at Sunauli and to the hilly towns in Tansen and Pokhara valley, and holds the title of being "The Best City in Nepal" five times in a row.