"Beyond the Wall of Sleep" is a science fiction short story by American writer H. P. Lovecraft, written in 1919 and first published in the amateur publication Pine Cones in October 1919.

A worker of a mental hospital relates his experience with Joe Slater, an inmate who died at the facility a few weeks after being confined as a criminally insane murderer. He describes Slater as a "typical denizen of the Catskill Mountain region, who corresponds exactly with the 'white trash' of the South", for whom "laws and morals are nonexistent" and whose "general mental status is probably below that of any other native American people". Although Slater's crime was exceedingly brutal and unprovoked he had an "absurd appearance of harmless stupidity" and the doctors guessed his age at about forty. During the third night of his confinement, Slater had the first of his "attacks". He burst from an uneasy sleep into a frenzy so violent it took four orderlies to strait-jacket him. For nearly fifteen minutes he gave vent to an incredible rant.

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: 28 minutes 18 seconds