Thalia Theater, Theater in Hamburg-Altstadt, Germany

The Thalia Theater occupies a neoclassical building on Gerhart-Hauptmann-Platz, opened in 1912 to designs by Lundt & Kallmorgen with 1,300 seats. Its auditorium interior, rebuilt by architect Werner Kallmorgen and reopened in 1960, is a noted example of post-war modernism. The main house today seats around 1,000 spectators.

The theater house was founded in 1843 and named after the muse Thalia from ancient mythology. Its current building was completed in 1912 and has shaped the city center since then.

The name refers to Thalia, the muse of comic poetry and entertainment and one of the three Graces. Since 2010 the two-week Lessingtage festival runs from late January to early February, bringing international guest performances to all Thalia stages and other city venues, taking Lessing's Enlightenment ideas as its starting point.

The main house sits at Alstertor in the Altstadt, a short walk from the Binnenalster and Gerhart-Hauptmann-Platz. The smaller stage, Thalia in der Gaußstraße, is in the Altona borough, so allow travel time between the two venues. The repertoire of around 20 productions alternates daily or in blocks, with roughly nine premieres a season in the main house and six at Gaußstraße.

The second venue, Thalia in der Gaußstraße in Altona, opened in 1972 as TiK – Thalia in der Kunsthalle before moving to its own house. Around six premieres are staged there each season, alongside the roughly nine in the main house at Alstertor.