Teatro Parque Cousiño, Historical theatre in Barrio Viel, Santiago, Chile

Teatro Parque Cousiño is a three-story building with a basement at San Ignacio de Loyola 1249 in the Barrio Viel. Its architects, Horacio Guzmán and Manuel Cifuentes, used reinforced concrete and masonry. The auditorium has almost 400 seats: 200 on the first floor and 190 in the upper circle. The facade was originally painted salmon red, terracotta and white.

The construction date is not documented with certainty; it is estimated between the late 1920s and early 1930s. Architects Horacio Guzmán and Manuel Cifuentes, the first graduate architect of the Pontificia Universidad Católica de Chile, designed it for employees of the Caja de Empleados Particulares. The Chama brothers were the first owners, later the Zacur brothers rented it for adult shows. It was declared a National Monument in 2014.

Between 1950 and 1973, the building was known as Teatro Humoresque and hosted comedians and performers who entertained Santiago audiences. The stage was an important part of the neighborhood's social life during that time.

The theatre stands at San Ignacio de Loyola 1249, one block from Avenida Manuel Antonio Matta and a short walk from Parque O'Higgins metro station in the Barrio Viel. The 2012 FONDART-funded Conservation project, directed with architect Leonardo Suárez, restored the disused building and recovered its original brick, white and terracotta colours.

Locals nicknamed the theatre "el municipal chico" for the quality of its shows, comparing it to Santiago's Teatro Municipal. Its original salmon-red, terracotta and white paint was later covered in white and yellow before the 2012 FONDART-funded project restored the original colours.