The Theater auf der Wieden, also called the Freihaus-Theater auf der Wieden or the Wiednertheater, was a theater located in the then-suburban Wieden district of Vienna in the late 18th century. It existed for only 14 years (1787–1801), but during this time it was the venue for the premiere of no fewer than 350 theatrical works, of which the most celebrated was Wolfgang Amadeus Mozart's opera The Magic Flute.