The Hessisches Staatstheater Wiesbaden is a German theatre located in Wiesbaden, in the German state Hesse. The company produces operas, plays, ballets, musicals and concerts on four stages. Known also as the 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.