Teatro de Verano Ramón Collazo, Open-air theatre in Parque Rodó, Montevideo, Uruguay

The Teatro de Verano Ramón Collazo is an open-air amphitheatre in the Parque Rodó area of Montevideo, built into the former quarry grounds near the Río de la Plata. Its stage is covered by a catenary vault of reinforced ceramic brick designed by architect Carlos Pascual using engineer Eladio Dieste's technique, installed in 2006. Curved rows of green seats fan out in front, divided by low white concrete walls, with concrete steps at the lower left and grassy slopes and trees around the site.

The site was a quarry owned by businessman Francisco Piria, later used for circus tents. Under Intendant Juan Pedro Fabini the open-air theatre was built in the second half of 1943 and inaugurated on 15 January 1944, after a storm postponed the planned 8 January opening; the Original Ballet Russe performed. A cone by Julio Giacosa covered the stage from 1962 until 2006, when a ceramic vault by Carlos Pascual replaced it.

Since 1971 the theatre has hosted every round of the Official Carnival Competition, with murgas, parody troupes and revue companies performing on its stage; the first Carnival event there dates from 1945. In 1986 it was renamed after actor and Carnival performer Ramón Collazo, six years after his death. In the mid-1980s it also became a key stage for Uruguayan rock bands.

The theatre sits in the former quarry grounds of Parque Rodó, close to the Río de la Plata. The stage is uncovered, so shows depend on the weather; the 2023–2024 works added seating, lighting and parking. Accessible routes and a new upper tier were part of those renovations.

The innovative roof design uses ceramic-based engineering techniques developed by renowned Uruguayan engineer Eladio Dieste. This structural approach is uncommon in South America and sets the venue apart from similar outdoor theaters.