Plaza de Armas de Los Ángeles, Central plaza in Los Ángeles, Chile.

Plaza de Armas de Los Ángeles is a central square featuring a circular fountain at its center, surrounded by seven bridges and decorated with female statues and an equestrian monument. Key civic buildings including the Provincial Government Office, City Hall, and the Cathedral of Santa María de los Ángeles frame its perimeter.

The square's current layout dates from a renovation by the municipality of Los Ángeles at the start of the 21st century, which reduced the number of trees and added paving and new corner treatments at the four entrances formed by Lautaro, Colón, Caupolicán and Valdivia streets. The equestrian statue of Bernardo O'Higgins, first mayor of the city, by sculptor Claudio Calderón, was inaugurated in 2001.

A canelo (Drimys winteri), a tree sacred in Mapuche cosmology, was planted here in June 2022 with a metal plaque on a wooden base and a wooden barrier around it. By February 2025 the young tree had lost its central shoot, which affects the shape of its crown. The four marble female figures at the corners, known as "Las cuatro Estaciones", represent Summer, Autumn, Winter and Spring.

The square is bounded by Lautaro, Colón, Caupolicán and Valdivia streets, with the Provincial Government building and Correos on the south side and the cathedral on the west. The open amphitheatre on the Lautaro side has three steps of seating. Under the municipal environmental ordinance, animal waste must not be left in the public spaces of the square.

The Club de la Unión building, built in 1931, houses the only decorative frieze in the entire city. This artwork demonstrates the architectural importance of this historic building at the plaza's edge.