West Nusa Tenggara (Indonesian: Nusa Tenggara Barat, NTB; pronounced [ˌnusa t̪əŋˌɡara ˈbarat̪̚], lit. 'West Southeast Islands') is a province of Indonesia. It comprises the western portion of the Lesser Sunda Islands, with the exception of Bali which is its own province. The area of this province is 19,890.31 km (7,679.69 sq mi) which consists of two main islands, namely Lombok Island and Sumbawa Island as well as several other small islands. The two largest islands in this province are the smaller but much more populated Lombok in the west and the much larger in area but much less densely populated Sumbawa island in the east. Mataram, on Lombok, is the capital and largest city of the province. It shares maritime borders with Bali to the west and East Nusa Tenggara to the east.
Geographically, West Nusa Tenggara is divided into a flat coastal area, especially in western and southern Lombok, and a mountainous area that includes Mount Rinjani, the highest mountain in the province at 3,726 meters, which is also an active volcano and one of the most popular natural tourist destinations. On Sumbawa Island, the landscape is more varied with steeper hills and mountains and dry grasslands in the east.