The Hessisches Staatstheater Wiesbaden is the State Theatre of the German state Hesse in its capital Wiesbaden, producing operas, plays, ballets, musicals and concerts on four stages. It is also known as Staatstheater Wiesbaden or Theater Wiesbaden, its orchestra is the Hessisches Staatsorchester. The building was inaugurated in 1894.
The theatre is the host for the annual festival Internationale Maifestspiele Wiesbaden, established in 1896 after the Bayreuth Festival.