- an island in the Philippines, southwest of Mindanao. 495 sq. mi. (1,282 sq. km).
- a city on this island.
- a group of islands in the Philippines, SW of Mindanao
- the main island of this group, separated from Mindanao by the Basilan Strait . Area: 1282 sq km (495 sq miles)
- a city on Basilan Island. Pop: 381 000 (2005 est)