Plaza San Martín, Public square in the historic centre of Córdoba, Argentina

Plaza San Martín is a green square in the historic centre of Córdoba, Argentina, laid out in 1577 on a 102 by 115 metre quadrilateral. A bronze equestrian statue of José de San Martín, installed in 1916, stands on a tiered stone pedestal with reliefs and four corner figures. The square has dense trees and an octagonal fountain.

Planned in 1577 by Lieutenant Governor Lorenzo Suárez de Figueroa, four years after the city's founding, the square was laid out at the centre of a 70-block grid, with the Cabildo and the Cathedral on the adjoining blocks. As the colonial Plaza Mayor it hosted fairs, patronal festivals and bullfights. In 1790 Viceroy Rafael de Sobremonte installed the first street lamps, and in 1901 Carlos León Thays designed the planting.

The square carries the name of José de San Martín, whose bronze equestrian monument has stood here since 1916, its base decorated with reliefs of the liberating campaigns. In colonial times it was the Plaza Mayor, where fairs, patron-saint festivities and even bullfights took place; today it is the central meeting point of the historic centre.

The square is bounded by Independencia, Rosario de Santa Fe, Buenos Aires and San Jerónimo streets, with sides roughly 102 by 115 metres; the original square shape changed when Independencia was widened. It sits in the historic centre, next to the Cabildo and the Cathedral, with the Pasaje Santa Catalina between them.

The square's bronze equestrian monument to José de San Martín has stood here since 1916, its pedestal decorated with bas-reliefs of the liberation campaigns. Nearby, an octagonal fountain-pool sometimes holds red fish of the pampa species, and a votive lamp is another of the square's ornaments.