Teatro San Martín, National Historical Theatre in San Miguel de Tucumán, Argentina.

Teatro San Martín is a theater venue in central San Miguel de Tucumán designed to host opera, classical music, and theatrical performances for approximately 800 people. The building incorporates architectural features that produce excellent sound quality throughout the main hall.

The theatre opened on 18 May 1912 as Teatro Odeón, staging Leo Fall's operetta La princesa de los dólares with the Sagi-Barba company. On 12 January 1951, provincial law 2367 renamed it San Martín, though it stayed mostly closed; it was only in 1959, when the province transferred it to the new Consejo Provincial de Difusión Cultural, that it joined local artistic life permanently.

The venue hosts performances by local resident companies including a provincial ballet ensemble and choir that play an active role in the city's cultural life. These groups perform regularly throughout the year, making the theater a center for ongoing artistic activity in the community.

The theatre stands on Boulevard Sarmiento, part of the block the governor Luis Nougués had developed with a theatre, the Hotel Savoy and a casino. Its 1979 remodelling pushed the façade forward and widened the entrance hall, ticket office, cloakroom and first-floor foyer. Around 100 performances are staged each year, so check the programme before travelling.

The renowned Italian baritone Titta Ruffo performed on this stage during Argentina's Independence Centennial celebrations, making it a memorable moment in the theater's musical legacy. This performance demonstrated the venue's importance in the country's artistic landscape during that era.