Chapter 15 ARMM - Autonomous Region in Muslim Mindanao

The Autonomous Region in Muslim Mindanao (abbreviated ARMM) is the region, located in the Mindanao island group of the Philippines, that is composed of 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.

The ARMM previously included the province of Shariff Kabunsuan until July 16, 2008, when Shariff Kabunsuan ceased to exist as a province after the Supreme Court in Sema v. Comelec declared unconstitutional the "Muslim Mindanao Autonomy Act 201", which created it.