Mindanao ( ) is the second largest and southernmost major island in the Philippines. It is also the name of one of the three island groups in the country (the other two being Luzon and the Visayas), consisting of the island of Mindanao and smaller outlying islands. Davao City is the largest city in Mindanao. As of the 2010 census, the island's population itself is 20,281,545 people, while the Mindanao island group has 21,968,174 inhabitants.

Mindanao ist die zweitgrößte Insel der Philippinen und deren südlichste Inselgruppe.