The Paris Métro or Métropolitain (French: Métro de Paris) is the rapid transit metro system in Paris, France. It has become a symbol of the city, noted for its density within the city limits and its uniform architecture influenced by Art Nouveau. The network's sixteen lines are mostly underground and run to 214 km (133 mi) in length. There are 301 stations (384 stops), of which 62 facilitate transfer to another line.

Paris has one of the densest metro networks in the world, with 245 stations within 86.9 km² (34 sq mi) of the city of Paris. Lines are numbered 1 to 14, with two minor lines, 3bis and 7bis. The minor lines were originally part of lines 3 and 7 but became independent.

Lines are identified on maps by number and colour. Direction of travel is indicated by the destination terminus.

Paris is the second busiest metro system in Europe, after Moscow. It carries 4.5 million passengers a day, and an annual total of 1.479 billion (2009).Châtelet – Les Halles, with 5 Métro lines and three RER commuter rail lines, is the world's largest underground station.

Coordinates: 48°51′24″N 2°21′03″E / 48.8567°N 2.3508°E / 48.8567; 2.3508

Paris (ⁱ/ˈpærɨs/; French: [paʁi] ( listen)) is the capital and largest city of France. It is situated on the river Seine, in northern France, at the heart of the Île-de-France region (or Paris Region, French: Région parisienne). As of January 2008 the city of Paris, within its administrative limits (the 20 arrondissements) largely unchanged since 1860, has an estimated population of 2,211,297 and a metropolitan population of 12,089,098, and is one of the most populated metropolitan areas in Europe. Paris was the largest city in the Western world for about 1,000 years, prior to the 19th century, and the largest in the entire world between the 16th and 19th centuries.

Paris is today one of the world's leading business and cultural centres, and its influences in politics, education, entertainment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities. It hosts the headquarters of many international organizations such as UNESCO, the OECD, the International Chamber of Commerce or the European Space Agency. Paris is considered one of the greenest and most liveable cities in Europe. It is also one of the most expensive.