Look up Buenos Aires in Wiktionary, the free dictionary.

Buenos Aires is the capital and most populous city of Argentina.

Buenos Aires may also refer to:

• Buenos Aires Central Business District, the central business district of Buenos Aires
• Greater Buenos Aires, the city of Buenos Aires and its surrounding conurbation, with 12 million inhabitants
• Buenos Aires Province, one of Argentina's 23 constituent provinces, which does include most of Greater Buenos Aires but does not include the federal capital
• State of Buenos Aires, a historical period when the province of Buenos Aires acted as a nominally independent state from the Argentine Confederation
• Autódromo Oscar Alfredo Gálvez, a racing circuit near Buenos Aires, commonly known as "Buenos Aires" by motor racing fans
• Lake Buenos Aires

• Buenos Aires Lake (Bolivia)

• Buenos Aires, Pernambuco, a city

• Buenos Aires, Cauca, a town

• Buenos Aires (canton), a canton in the Puntarenas province
• Buenos Aires (Costa Rica), a district in the Puntarenas province
• Buenos Aires District, Palmares, a district in the Alajuela province

• Buenos Aires, Dominican Republic, a sector in the city of Santo Domingo

• Concepción de Buenos Aires, a municipality in the state of Jalisco
• San Nicolás Buenos Aires, a municipality in the state of Puebla

• Buenos Aires, Rivas, a municipality

• Buenos Aires, Chame, a corregimiento in Panamá Oeste Province
• Buenos Aires, Ñürüm, a corregimiento in Ngäbe-Buglé Comarca

• Buenos Aires, Trujillo, a coastal town and resort
• Buenos Aires District, Picota, Peru
• Buenos Aires District, Morropón, Peru

• Buenos Aires (Santurce), in Santurce, Puerto Rico
• Little Buenos Aires, a neighborhood in Miami Beach, United States
• Buenos Aires National Wildlife Refuge, in the U.S. state of Arizona
• Buenos Aires, Arizona

• Buenos Aires-class destroyer
• SS Spanish transport Buenos Aires (1887), a Spanish merchant ship

• "Buenos Aires" (Iz*One song), 2019
• "Buenos Aires" (Tini song), from 2024 album Un Mechón de Pelo
• "Buenos Aires", a song by Tchami
• "Buenos Aires", a song from Evita
• "Buenos Aires", a song by Nathy Peluso
• Buenos Aires in the Southern Highlands, a social tango event in Australia
• Buenos Aires Convention, a copyright treaty
• Buenos Aires (Madrid Metro), a station on Line 1 of the Madrid Metro
• Buenos Aires, a Medellín Metro station

• Buenos Ayres, a town in Trinidad and Tobago

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