Frank Castorf (born 17 July 1951 in East Berlin) is a German theater director and was the artistic director of the Volksbühne am Rosa-Luxemburg-Platz from 1992 to 2015. His work is often associated with postdramatic theatre.
Castorf's father was an ironmonger. Frank Castorf successfully completed his schooling in 1969/70, entering training for railway work. Between 1970 and 1972 he undertook military service with the army's National Border Force.
Then, between 1971 and 1976, he attended the Humboldt University of Berlin, studying theatrology. His teachers included , Rudolf Münz and . His diploma dissertation, which was formally commended, was entitled "Ground Rules for the 'Development' of Ionesco's Global Ideological Perspective and Artistic-Aesthetic Position". He made numerous culturally focused visits to Poland during this period.
In 1989, Klaus Pierwoàbrought Castorf with a production of Hamlet to Schauspiel Köln, Cologne.
In 2013, he directed a "deliberately incoherent" production of the Ring Cycle at the Bayreuth Wagner Festival, which was booed by the audience.