The Gone-Away World is the debut novel of British author Nick Harkaway, a science fiction story set in a post-apocalyptic world crippled by the 'Go-Away War'. The book was first published in June 2008 by Heinemann.

Nicholas Cornwell, better known by his pen name Nick Harkaway, is a British novelist and commentator. As Harkaway, he is the author of the novels The Gone-Away World, Angelmaker, Tigerman, and Gnomon; and a non-fiction study of the digital world, The Blind Giant: Being Human in a Digital World. Cornwell has also written two novels under the pseudonym Aidan Truhen.