The Autonomous Region in Muslim Mindanao () (abbreviated ARMM) is an Autonomous region of the Philippines, located in the Mindanao island group of the Philippines, that is composed of five predominantly Muslim provinces, namely: Basilan (except Isabela City), Lanao del Sur, Maguindanao, Sulu and Tawi-Tawi. It is the only region that has its own government. The regional capital is at Cotabato City, although this city is outside of its jurisdiction.