Teatro da Trindade, Historic theatre in Santa Maria Maior, Portugal

Teatro da Trindade is a theatre building in Lisbon with classical architecture and multiple balcony levels for performances. The interior features traditional design elements that place the audience in a formal setting typical of opera and theatre venues.

Francisco Palha, a playwright, founded the theatre with investors including the Duke of Palmela; it opened on 30 November 1867, months after its Salão hall. Sold in 1921 to the Anglo-Portuguese Telephone Company, it was bought back by José Loureiro in 1923. FNAT acquired it in 1962, and INATEL still runs it.

The theatre's name comes from the Largo da Trindade, the square where it stands. Its ceiling painting by José Procópio shows Portuguese literary and theatrical figures such as Gil Vicente, Camões and Bocage. Francisco Palha introduced a genre he called "burlesque opera" here, with Delphina and Amélia Barros among the leading performers.

The theatre is centrally located in Lisbon's old town and is easily accessible by public transport. Visitors should check the current schedule in advance, as performances vary depending on the season.

The stalls' mahogany chairs had hooks on the back so men could hang their hats, and the floor could be raised by a jack worked by two men to stage level, turning the auditorium into a ballroom. The ceiling paintings by José Procópio show Portuguese literary and theatrical figures.