Nyarlathotep is a character in the works of H. P. Lovecraft and other writers. The character is commonly known in association with its role as a malign deity in the Lovecraft Mythos fictional universe, where it is known as the Crawling Chaos. First appearing in Lovecraft's 1920 prose poem of the same name, he was later mentioned in other works by Lovecraft and by other writers and in the tabletop role-playing games making use of the Cthulhu Mythos. Later writers describe him as one of the Outer Gods.

In his first appearance in "Nyarlathotep" (1920), he is described as a "tall, swarthy man" who resembles an ancient Egyptian pharaoh. In this story he wanders the Earth, seemingly gathering legions of followers, the narrator of the story among them, through his demonstrations of strange and seemingly magical instruments. These followers lose awareness of the world around them, and through the narrator's increasingly unreliable accounts, the reader gets an impression of the world's collapse.

Famous works of the author Howard Phillips Lovecraft: At the Mountains of Madness, The Dreams in the Witch House, The Horror at Red Hook, The Shadow Out of Time, The Shadows over Innsmouth, The Alchemist, Reanimator, Ex Oblivione, Azathoth, The Call of Cthulhu, The Cats of Ulthar, The Dunwich Horror, The Doom that Came to Sarnath, The Festival, The Silver Key, The Other Gods, The Outsider, The Temple, The Picture in the House, The Shunned House, The Terrible Old Man, The Tomb, Dagon, From Beyond, What the Moon Brings.

• Narrator: Peter Coates
• Listening Length: 8 minutes 23 seconds