The Thalia Theater is one of the three state-owned theatres in Hamburg, Germany. It was founded in 1843 by Charles Maurice Schwartzenberger and named after the muse Thalia. Today, it is home to one of Germany's most famous ensembles and stages around 9 new plays per season. Current theatre manager is Joachim Lux, who in 2009/10 succeeded Ulrich Khuon.
In addition to its main building, located in the street Raboisen in the Altstadt quarter near the Binnenalster and Gerhart-Hauptmann-Platz in Hamburg's inner city, the theatre operates a smaller stage, used for experimental plays, the Thalia in der Gaußstraße, located in the borough of Altona.