Teatro Principal Antzokia, 19th century theatre in Vitoria-Gasteiz, Spain.

Teatro Principal Antzokia stands at 29 San Prudencio Street in central Vitoria-Gasteiz, in a building designed by the local architect Cesáreo Iradier, who took the Teatro de la Zarzuela in Madrid as his model. It opened in 1918 as the Nuevo Teatro de Vitoria, built with money raised when local citizens bought shares in the project. The present hall replaced an earlier theatre that had stood on the same site from 1822 to 1914.

The present theatre opened in 1918 as the Nuevo Teatro de Vitoria, funded by citizens who bought shares. It was designed by Cesáreo Iradier, inspired by Madrid's Teatro de la Zarzuela. In December 1961 it took the name Teatro Principal, recalling an earlier theatre that stood on the same site from 1822 to 1914. The Basque Government, the Provincial Council of Álava and the City Council renovated it in 1992.

The venue serves as a gathering place where locals come to watch theatre, music, and dance performances. It connects the city's artistic community with audiences who share an interest in live entertainment.

It is best to buy tickets early as popular performances can sell out quickly. Online booking through the official website makes it easy to check schedules and reserve your seats.

The theatre hosts the finals of the Álava Bertsolari Championship, a contest of improvised Basque verse sung in the bertsolaritza tradition. The building itself was funded by local citizens who bought shares to make its 1918 opening possible.