This page lists the top 50 largest metropolitan areas of the world. All population numbers here are for metropolitan areas, rather than for the city proper.
| City name | Population |
| Tokyo, Japan | 34,900,000 incl. Kanagawa, Saitama and Chiba prefectures |
| [[S�o Paulo]], Brazil | 25,250,000 incl. Guarulhos |
| New York, United States | 24,600,000 incl. Newark, Paterson |
| Seoul, South Korea | 21,150,000 incl. Inchon, Songnam |
| Mexico City, Mexico | 20,750,000 incl. [[Nezahualc�yotl]], Ecatepec, Naucalpan |
| Mumbai (Bombay), India | 18,150,000 incl. Kalyan, Thane, Ulhasnagar |
| Osaka, Japan | 18,000,000 incl. Kobe, Kyoto |
| Delhi, India | 17,150,000 incl. Faridabad, Ghaziabad |
Los Angeles, California, United States | 16,375,000 incl. Riverside, Anaheim |
| Jakarta, Indonesia | 15,850,000 incl. Bekasi, Bogor, Depok, Tangerang |
| Cairo, Egypt | 15,100,000 incl. Al-Jizah, Shubra al-Khaymah |
| Kolkata (Calcutta), India | 14,550,000 incl. Haora |
| Buenos Aires, Argentina | 13,700,000 incl. San Justo, La Plata |
| Manila, Philippines | 13,450,000 incl. Kalookan, Quezon City |
| Moscow, Russia | 13,200,000 |
| Karachi, Pakistan | 12,300,000 |
| Rio de Janeiro, Brazil | 12,250,000 incl. [[Nova Igua�u]], [[S�o Gon�alo]] |
| Shanghai, China | 12,200,000 |
| London, United Kingdom | 11,850,000 |
| Teheran, Iran | 11,050,000 incl. Karaj |
| Istanbul, Turkey | 11,000,000 |
| Dhaka, Bangladesh | 10,350,000 |
| Paris, France | 9,800,000 |
| Chicago, United States | 9,400,000 |
| Lagos, Nigeria | 9,250,000 |
| Beijing, China | 9,200,000 |
| Lima, Peru | 7,900,000 |
| Washington DC, United States | 7,850,000 incl. Baltimore |
| Bogota, Colombia | 7,700,000 |
| Bangkok, Thailand | 7,500,000 |
| Johannesburg, South Africa | 7,450,000 incl. Soweto, East Rand, West Rand |
| Taipei, Taiwan | 7,400,000 |
| San Francisco, United States | 7,250,000 incl. Oakland, San Jose |
| Chongqing City, China | 7,200,000 |
| Chennai (Madras), India | 7,100,000 |
| Hong Kong, China | 6,950,000 incl. Kowloon |
| Kinshasa, Congo | 6,600,000 |
| Lahore, Pakistan | 6,500,000 |
| Bangalore, India | 6,350,000 |
| Philadelphia, United States | 6,300,000 |
| Toronto, Canada | 6,200,000 inc. Hamilton and the Niagara Peninsula | |
| Hyderabad India | 6,150,000 |
| Ruhr area, Germany | 6,050,000 incl. Essen, Bochum, and Dortmund |
| Khartoum, Sudan | 5,950,000 |
| Boston, United States | 5,900,000 incl. Worcester |
| Detroit, United States | 5,850,000 incl. Windsor (Canada) |
| Tianjin, China | 5,750,000 |
| St. Petersburg, Russia | 5,550,000 |
| Metroplex, United States | 5,500,000 incl. Dallas and Fort Worth |
| Santiago de Chile, Chile | 5,450,000 |