The Paz ("Peace") Theater (Portuguese: Teatro da Paz, Teatro da Pash) was designed by the military engineer José Tibúrcio Pereira de Magalhães and was built between 1869 and 1878 in Belém do Pará, Brazil. Its neoclassical style façade is an acquiescence to the period of time when this style was in great account in Brazil. To some, Magalhães' inspiration model was La Scala in Milan, Italy. Its name pay homage to the end of the War of the Triple Alliance (1864–1870).
The first piece to be act in the theater was the play by Adolphe d'Ennery, Les Deux Orphelines, on February 16, 1878.
The Paz is the biggest theatre in north Brazil and most of the building material came from Europe (Italian marble, English cast iron and French luster). The hall is decorated with sculptures of the most famous Brazilians artists of the 19th century.