
Argentina is subdivided into twenty-three provinces and one autonomous city, Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system.

Buenos Aires, officially Autonomous City of Buenos Aires, is the capital and largest city of Argentina. The city is located on the western shore of the estuary of the Río de la Plata, on the South American continent's southeastern coast. "Buenos Aires" can be translated as "fair winds" or "good airs", but the former was the meaning intended by the founders in the 16th century, by the use of the original name "Real de Nuestra Señora Santa María del Buen Ayre", named after the Madonna of Bonaria in Sardinia. The Greater Buenos Aires conurbation, which also includes several Buenos Aires Province districts, constitutes the fifth-most populous metropolitan area in the Americas, with a population of around 15.6 million.

Buenos Aires is the largest and most populous Argentine province. It takes its name from the city of Buenos Aires, the capital of the country, which used to be part of the province and the province's capital until it was federalized in 1880. Since then, in spite of bearing the same name, the province does not include Buenos Aires proper, though it does include all other parts of the Greater Buenos Aires metropolitan area. The capital of the province is the city of La Plata, founded in 1882.

Catamarca is a province of Argentina, located in the northwest of the country. The province had a population of 334,568 as per the 2001 census [INDEC], and covers an area of 102,602 km2. Its literacy rate is 95.5%. Neighbouring provinces are : Salta, Tucumán, Santiago del Estero, Córdoba, and La Rioja. To the west it borders the country of Chile.

Chaco, officially the Province of Chaco is one of the 23 provinces in Argentina. Its capital and largest city, is Resistencia. It is located in the north-east of the country.

Chubut is a province in southern Argentina, situated between the 42nd parallel south, the 46th parallel south, the Andes range to the west, and the Atlantic ocean to the east. The province's name derives from the Tehuelche word chupat, meaning "transparent," their description of the Chubut River.

Córdoba is a province of Argentina, located in the center of the country. Its neighboring provinces are Santiago del Estero, Santa Fe, Buenos Aires, La Pampa, San Luis, La Rioja, and Catamarca. Together with Santa Fe and Entre Ríos, the province is part of the economic and political association known as the Center Region.

Corrientes ; officially the Province of Corrientes is a province in northeast Argentina, in the Mesopotamia region. It is surrounded by : Paraguay, the province of Misiones, Brazil, Uruguay, and the provinces of Entre Rios, Santa Fe and Chaco.

Entre Ríos is a central province of Argentina, located in the Mesopotamia region. It borders the provinces of Buenos Aires (south), Corrientes (north) and Santa Fe (west), and Uruguay in the east.

Formosa Province is a province in northeastern Argentina, part of the Gran Chaco Region. Its northeast end touches Asunción, Paraguay, and borders the provinces of Chaco and Salta to its south and west, respectively. The capital is Formosa.

Jujuy is a province of Argentina, located in the extreme northwest of the country, at the borders with Chile and Bolivia. The only neighbouring Argentine province is Salta to the east and south.

La Pampa is a sparsely populated province of Argentina, located in the Pampas in the center of the country. Neighboring provinces are from the north clockwise San Luis, Córdoba, Buenos Aires, Río Negro, Neuquén and Mendoza.

La Rioja is a province of Argentina located in the west of the country. The landscape of the province consist of a series of arid to semi-arid mountain ranges and agricultural valleys in between. It is in one of these valleys that the capital of the province, the city of la La Rioja, lies. Neighboring provinces are from the north clockwise Catamarca, Córdoba, San Luis and San Juan. The dinosaur Riojasaurus is named after the province.

The following table is a list of the 23 provinces and the Autonomous City of Buenos Aires of Argentina, ranked in order of their total population based on data from 2013 estimates, 2010 and 2001 census from the National Institute of Statistics and Census of Argentina.

The provincial legislatures of Argentina are the organs of the legislative power of each province of the Republic of Argentina. There are provinces with a chamber of deputies and senate, and others with a unicameral system. The total number of provincial legislators in Argentina is 1199.

Mendoza, officially Province of Mendoza, is a province of Argentina, in the western central part of the country in the Cuyo region. It borders San Juan to the north, La Pampa and Neuquén to the south, San Luis to the east, and the republic of Chile to the west; the international limit is marked by the Andes mountain range. Its capital city is the homonymous city of Mendoza.

Misiones is one of the 23 provinces of Argentina, located in the northeastern corner of the country in the Mesopotamia region. It is surrounded by Paraguay to the northwest, Brazil to the north, east and south, and Corrientes Province of Argentina to the southwest.

Neuquén is a province of Argentina, located in the west of the country, at the northern end of Patagonia. It borders Mendoza Province to the north, Rio Negro Province to the southeast, and Chile to the west. It also meets La Pampa Province at its northeast corner.

Río Negro is a province of Argentina, located at the northern edge of Patagonia. Neighboring provinces are from the south clockwise Chubut, Neuquén, Mendoza, La Pampa and Buenos Aires. To the east lies the Atlantic Ocean.

Salta is a province of Argentina, located in the northwest of the country. Neighboring provinces are from the east clockwise Formosa, Chaco, Santiago del Estero, Tucumán and Catamarca. It also surrounds Jujuy. To the north it borders Bolivia and Paraguay and to the west lies Chile.

San Juan Province is a province of Argentina, located in the western part of the country. Neighbouring provinces are, moving clockwise from the north, La Rioja, San Luis and Mendoza. It borders with Chile to the west.

San Luis is a province of Argentina located near the geographical center of the country. Neighboring provinces are, from the north clockwise, La Rioja, Córdoba, La Pampa, Mendoza and San Juan.

Santa Cruz Province is a province of Argentina, located in the southern part of the country, in Patagonia. It borders Chubut Province to the north, and Chile to the west and south, with an Atlantic coast on its east. Santa Cruz is the second-largest province of the country, and the least densely populated in mainland Argentina.

The Province of Santa Fe is a province of Argentina, located in the center-east of the country. Neighboring provinces are from the north clockwise Chaco, Corrientes, Entre Ríos, Buenos Aires, Córdoba, and Santiago del Estero. Together with Córdoba and Entre Ríos, the province is part of the economico-political association known as the Center Region.

Santiago del Estero, also known simply as Santiago, is a province in the north of Argentina. Neighbouring provinces, clockwise from the north, are Salta, Chaco, Santa Fe, Córdoba, Catamarca and Tucumán.

Tierra del Fuego is the southernmost, smallest, and least populous Argentine province.

Tucumán is the most densely populated, and the second-smallest by land area, of the provinces of Argentina.