"The Colour Out of Space" is a science fiction/horror short story by American author H. P. Lovecraft, written in March 1927. In the tale, an unnamed narrator pieces together the story of an area known by the locals as the "blasted heath" in the hills west of the fictional town of Arkham, Massachusetts. The narrator discovers that many years ago a meteorite crashed there, poisoning every living being nearby: vegetation grows large but foul-tasting, animals are driven mad and deformed into grotesque shapes, and the people go insane or die one by one.

Lovecraftian horror, also called cosmic horror or eldritch horror, is a subgenre of horror fiction and weird fiction that emphasizes the horror of the unknowable and incomprehensible more than gore or other elements of shock. It is named after American author H. P. Lovecraft (1890–1937). His work emphasizes themes of cosmic dread, forbidden and dangerous knowledge, madness, non-human influences on humanity, religion and superstition, fate and inevitability, and the risks associated with scientific discoveries, which are now associated with Lovecraftian horror as a subgenre. The cosmic themes of Lovecraftian horror can also be found in other media, notably horror films, horror games, and comics.