Supernatural fiction (properly, "supernaturalist fiction") is a literary genre exploiting or requiring as plot devices or themes some contradictions of the commonplace natural world and materialist assumptions about it.
In its broadest definition, supernatural fiction includes examples of weird fiction, horror fiction, vampire literature, ghost story and like genres such as fantasy. Elements of supernatural fiction can be found in writing from genres such as science fiction. Amongst academics, readers and collectors, however, supernatural fiction is often classed as a discrete genre defined by the elimination of "horror", "fantasy", and elements important to other genres. The one genre supernatural fiction appears to embrace in its entirety is the traditional ghost story.
Supernatural fiction continues to be popular, but because it is not simple to define and is not popularly understood, it is not used as a marketing category by publishers, booksellers, libraries, etc. When marketed, supernatural fiction is often classed as mainstream fiction, or is subsumed by other subgenres.