"The Masque of the Red Death" (originally published as "The Mask of the Red Death: A Fantasy") is a short story by American writer Edgar Allan Poe, first published in 1842. The story follows Prince Prospero's attempts to avoid a dangerous plague, known as the Red Death, by hiding in his abbey. He, along with many other wealthy nobles, hosts a masquerade ball in seven rooms of the abbey, each decorated with a different color. In the midst of their revelry, a mysterious figure disguised as a Red Death victim enters and makes his way through each of the rooms. Prospero dies after confronting this stranger, whose "costume" proves to contain nothing tangible inside it; the guests also die in turn.

The story was first published in May 1842 in Graham's Magazine and has since been adapted in many different forms, including a 1964 film starring Vincent Price. Poe's short story has also been alluded to by other works in many types of media.