Largo do Arouche, Public square in República district, São Paulo, Brazil

Largo do Arouche is a square in the República district, bounded by Jaguaribe, Amaral Gurgel and Arouche streets and Duque de Caxias Avenue. Its reddish-brown tiled paving holds two tall trees in square cutouts with sloped concrete curbs, dark green planter boxes with stone tops, low green metal fencing and black lampposts with glass lanterns. Florists and thrift shops occupy the surrounding buildings.

The square originated as a military exercise ground in 1820 before becoming a public space decades later. By 1914, flower vendors had made it their home, establishing a tradition that continues to define the area.

The square's name honors José Arouche de Toledo Rendon, owner of the land and first director of the Law School of São Paulo. Since the 1940s it has been a meeting point for the LGBTQ+ community; the Caneca de Prata bar, founded in 1960, sheltered patrons during police raids under the military dictatorship. Seven flags were installed on 28 June 2015 for LGBT Pride Day.

The square lies in the República district, next to the República metro station and bounded by Jaguaribe, Amaral Gurgel and Arouche streets and Duque de Caxias Avenue, with Vieira de Carvalho Avenue on the opposite side. Renovation work that began in May 2019 added level paving, benches, drinking fountains and new lampposts, and the square reopened in March 2020.

The square holds a bust of historian Afonso d'Escragnolle Taunay, made by Claude Dunin, and a monument to Aureliano Leite by Luís Morrone, inaugurated in 1979, two years after his death. The São Paulo Academy of Letters, based at Largo do Arouche, commissioned the Leite bust.