Ciudad del Libertador General Don José de San Martín, more commonly known as San Martín, is the administrative seat of General San Martín Partido in the urban agglomeration of Greater Buenos Aires.

The area is heavily urbanised and is home to numerous food processing industries, as well as to a large Peugeot-Citroën auto factory. The city is bordered to the north-east by the autonomous city of Buenos Aires.

The town is home to the Chacarita Juniors football club, champions of Argentina in Metropolitano 1969.

• Enzo Fernández, footballer and 2022 FIFA World Cup champion
• Oscar Alfredo Gálvez, racing driver
• Agustín Carlos Roberto García, musician
• José Hernández, writer
• Marianela Núñez, ballet dancer
• Roberto De Vicenzo, golfer

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  Monument to General José de San Martín
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  Belgrano Street
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  Cathedral
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  San Martín Plaza
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  Belgrano Street - commercial area

• List of twin towns and sister cities in Argentina

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• Municipal information: Municipal Affairs Federal Institute (IFAM), Municipal Affairs Secretariat, Ministry of Interior, Argentina. (in Spanish)
• (in Spanish) San Martín website