Dom Pedro V Theatre, Historical theatre in São Lourenço, Macau, China.

Dom Pedro V Theatre is a theatre building in the São Lourenço district of Macau featuring neoclassical architecture with a prominent portico entrance. The interior includes a main auditorium for performances, a ballroom for social events, a study room, and a billiard room, all decorated with ornate details.

The theatre was built in 1860 with funds raised by 20 Macanese and 10 Chinese residents to commemorate King Peter V of Portugal. Its current façade, with a portico, arcade and neoclassical pediment, was added in 1873. It served as a refugee shelter during World War II, and in 2005 it was inscribed as part of the Historic Centre of Macau on the UNESCO World Heritage List.

The theatre was funded in 1860 by 20 Macanese and 10 Chinese subscribers, and its name honours Portugal's King Peter V. Besides the auditorium it housed a ballroom, a reading room and a billiard room, which earned it the local name "Porto de Cavalo billiard hall". It remains a venue for public events and celebrations.

The theatre stands on the east side of Largo de Santo Agostinho, the small square also called St Augustine's Square, uphill from Senado Square in the São Lourenço district. The surrounding lanes are narrow and stepped, so the last stretch is on foot. The portico ceiling was damaged by Typhoon Hato in August 2017, so parts of the front may be screened off.

The theatre's stage hosted the Asian premiere of Puccini's Madama Butterfly. Termite damage closed the building for nearly two decades; it reopened in 1993 after major renovations, and in August 2017 Typhoon Hato damaged the portico ceiling.