Buenos Aires Underground
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200 Series rolling stock at San José de Flores station.
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| Overview | |||
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| Owner | Subterráneos de Buenos Aires S.E. (government corporation) | ||
| Locale | Buenos Aires | ||
| Transit type | Rapid transit | ||
| Number of lines | 6 | ||
| Number of stations | 86 103 including Premetro |
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| Daily ridership | 1.11 million | ||
| Website | City of Buenos Aires | ||
| Operation | |||
| Began operation | 1 December 1913 | ||
| Operator(s) | Metrovías | ||
| Technical | |||
| System length | 53.9 km (33.5 mi) 61.3 km (38.1 mi) including Premetro |
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| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) (standard gauge) | ||
| Electrification |
     = 1500 V overhead line = 550 V third rail = 750 V overhead line |
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The Buenos Aires Underground (Spanish: Subterráneo de Buenos Aires), locally known as Subte (Spanish pronunciation: [ˈsubte], from subterráneo – 'underground' or 'subterranean'), is a mass transit metro system that serves the area of the city of Buenos Aires, Argentina. The first section of this network (Plaza de Mayo-Plaza Miserere) opened in 1913, making it the 13th subway in the world, and first underground railway in Latin America, the Southern Hemisphere and the Spanish-speaking world, with the Madrid Metro opening five years later, in 1919. As of 2015, Buenos Aires is the only Argentine city with a metro system, but there is a proposal to build a metro in the city of Córdoba (the Córdoba Metro), while a proposal to build a metro in Rosario was shelved in favour of a tramway network.
Currently, the underground network's six lines—A, B, C, D, E, and H—comprise 53.9 kilometers (33.5 mi) of route that serve 86 stations. The network is complemented by the 7.4 km long Premetro line, and the 26 km long Urquiza suburban line, with 17 more stations in total. As of 2015, the underground also has 4 closed stations, and lines E and H are undergoing expansions. Over a million passengers use the network, which also provides connections with the city's extensive commuter rail and bus rapid transport networks.
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