30 Door Key, also spelled as Thirty Door Key, is a 1991 English-language drama film directed and produced by Jerzy Skolimowski, and written by Skolimowski, Michał Skolimowski, and Józef Skolimowski. It starred Iain Glen, Robert Stephens, and Crispin Glover. The film was based on the 1937 novel Ferdydurke by Witold Gombrowicz. The film premiered at the 48th Venice International Film Festival on 2 September 1991 and was released in Poland on 21 February 1992. It was produced in France, Poland, and the United Kingdom by Million Frames Limited and Cinea.