The Beast in the Jungle is a 1903 novella by Henry James, first published as part of the collection The Better Sort. Almost universally considered one of James' finest short narratives, this story treats appropriately universal themes: loneliness, fate, love and death. The parable of John Marcher and his peculiar destiny has spoken to many readers who have speculated on the worth and meaning of human life.

Henry James was an American-British author. He is regarded as a key transitional figure between literary realism and literary modernism, and is considered by many to be among the greatest novelists in the English language. He was the son of Henry James Sr. and the brother of philosopher and psychologist William James and diarist Alice James.