John Griffith Chaney, better known as Jack London, was an American novelist, journalist and activist. A pioneer of commercial fiction and American magazines, he was one of the first American authors to become an international celebrity and earn a large fortune from writing. He was also an innovator in the genre that would later become known as science fiction.

The Iron Heel is a political novel in the form of science fiction by American writer Jack London, first published in 1908.