Lombok is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east.
The provincial capital and largest city on the island is Mataram.
Lombok is somewhat similar in size and density, and shares some cultural heritage with the neighboring island of Bali to the west. However, it is administratively part of West Nusa Tenggara, along with the larger and more sparsely populated island of Sumbawa to the east. Lombok is surrounded by a number of smaller islands locally called Gili.
The island is home to some 3.35 million Indonesians as recorded in the decennial 2014 census.
The island's inhabitants are 85% Sasak, whose origins are thought to have migrated from Java in the first millennium BC. Other residents include an estimated 10–15% Balinese, with the small remainder being Tionghoa-peranakan, Javanese, Sumbawa and Arab Indonesians.
The Sasak population are culturally and linguistically closely related to the Balinese, but unlike the Hindu Balinese, the majority are Muslim and the landscape is punctuated with mosques and minarets. Islamic traditions and holidays influence the Island's daily activities.