Pulau Tiga is one of a group of small uninhabited islands in Kimanis Bay off the western coast of Sabah, Malaysia. The islands were formed on 21 September 1897, when an earthquake on Mindanao caused a volcanic eruption near Borneo. The island is 607 hectares in size and has a couple of active mud volcanos at the highest part of the island. Pulau Tiga is one of the three islands that make up Pulau Tiga National Park.