"The Great C" is a science fiction short story by American writer Philip K. Dick, first published in in 1953. It has since been republished several times in collections such as Beyond Lies the Wub in 1988. Parts of the work, along with Planet for Transients, were later used in the full-length novel Deus Irae. The story is set in a post-apocalyptic world in which a young man is sent from his tribe every year to visit a godlike computer capable of mass destruction and try to stump it with three questions. The story was adapted into an animated virtual reality film in 2018 by Secret Location.