On 5 August 2018, a destructive and shallow earthquake measuring Mw  6.9 struck the island of Lombok, Indonesia. It was the main shock following its foreshock, a nearby Mw  6.4 earthquake on 29 July. It was followed by a nearby 6.9 earthquake on 19 August 2018.

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. It is roughly circular, with a "tail" to the southwest, about 70 kilometres across and a total area of about 4,607.38 square kilometres including smaller offshore islands. The provincial capital and largest city on the island is Mataram.