Metropolitan Manila (Filipino: Kalakhang Maynila, Kamaynilaan), the National Capital Region (NCR) (Filipino: Pambansang Punong Rehiyon), or simply Metro Manila, is the metropolitan region encompassing the City of Manila and its surrounding areas in the Philippines. It is composed of 16 cities, namely Manila, Caloocan, Las Piñas, Makati, Malabon, Mandaluyong, Marikina, Muntinlupa, Navotas, Pasay, Pasig, Parañaque, Quezon City, San Juan, Taguig, and Valenzuela, and the Municipality of Pateros.
The region is the political, economic, social, cultural, and educational center of the Philippines. As proclaimed by Presidential Decree No. 940, Metro Manila as a whole is the Philippines' seat of government while the City of Manila is the capital. The largest city in the metropolis is Quezon City, while the largest business district is the Makati Central Business District.
Metro Manila is the most populous of the twelve defined metropolitan areas in the Philippines and the 11th most populous in the world. As of the 2010 census, it had a population of 11,855,975, comprising 13% of the national population. The sum total population of provinces with a provincial density above 700 people per square kilometer (more than double the national average) in a contiguous zone with Metro Manila is 25.5 million people as of the 2007 census, one way to refer to the conurbation around Metro Manila is Greater Manila.
Metro Manila's gross regional product is estimated as of July 2011 to be $149 billion and accounts for 33% of the nation's GDP. In 2011, according to PricewaterhouseCoopers, it ranked as the 28th wealthiest urban agglomeration in the world and the 2nd in Southeast Asia.