Tiga Island (Malay: Pulau Tiga) is one of a group of small uninhabited volcanic 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.

Located 48 km south of Kota Kinabalu and the Tunku Abdul Rahman National Park, Tiga Island National Park is reached by driving the 140 km to Kuala Penyu, a small settlement on the tip of the Klias Peninsula.

Another way of getting there is by chartering a speed boat from Kota Kinabalu and cruise to Tiga Island, or fly to Labuan and charter a speed boat from Labuan.

The island was also rumoured to be the setting of the third season of Australian Survivor.