Teatro Principal, Performance venue in Alicante, Spain.

Teatro Principal is a freestanding neoclassical theatre on Plaza de Ruperto Chapí, with a Doric portico of six columns and a triangular pediment. Its Italian-style auditorium has a ground floor and three upper levels, seating 1,100 after the 1989–91 renovation.

A group of merchants, aristocrats and landowners founded the theatre in 1845, and it opened on 25 September 1847 with Gil de Zárate's drama Guzmán el Bueno. Originally called Teatro Nuevo, it became Teatro de Alicante and then Teatro Principal. Francoist bombing damaged it on 28 February 1939; Juan Vidal Ramos restored it in 1939–41, and Alfonso Navarro Guzmán renovated it between 1985 and 1992.

The venue serves as a gathering place where Spanish and international artists perform opera, ballet, and theatrical works throughout the year. People here experience both classical and contemporary performances.

The building sits in a central location near Explanada de España with easy access to nearby restaurants and public transportation. This makes it simple for visitors to reach the venue and plan additional activities in the surrounding area.

The ceiling of the auditorium was painted by Ramon Simarro i Oltra, showing a bright sky with an allegory of Apollo presiding over a contest of the fine arts. Part of the stage and hall was destroyed by Francoist aviation during the Civil War.