Southern Gothic is a subgenre of the Gothic writing style, unique to American literature. Like its parent genre, it relies on supernatural, ironic, or unusual events to guide the plot. Unlike its predecessor, it uses these tools not for the sake of suspense, but to explore social issues and reveal the cultural character of the American South.

The Southern Gothic author usually avoids perpetuating antebellum stereotypes like the contented slave, the demure Southern belle, the chivalrous gentleman, or the righteous Christian preacher. Instead, the writer takes classic Gothic archetypes, such as the damsel in distress or the heroic knight, and portrays them in a more modern and realistic manner — transforming them into, for example, a spiteful and reclusive spinster, or a white-suited, fan-brandishing lawyer with ulterior motives.

One of the most notable features of the Southern Gothic is "the grotesque" — this includes situations, places, or stock characters that often possess some cringe-inducing qualities, typically racial bigotry and egotistical self-righteousness — but enough good traits that readers find themselves interested nevertheless. While often disturbing, Southern Gothic authors commonly use deeply flawed, grotesque characters for greater narrative range and more opportunities to highlight unpleasant aspects of Southern culture, without being too literal or appearing to be overly moralistic.

This genre of writing is seen in the work of such famous Southern writers as William Faulkner, Erskine Caldwell, Flannery O'Connor, Carson McCullers, Eudora Welty, Tennessee Williams, Truman Capote, Harry Crews, Lee Smith, Cormac McCarthy, Barry Hannah, Katherine Ann Porter, Lewis Nordan, and William Gay among others. Tennessee Williams described Southern Gothic as a style that captured "an intuition, of an underlying dreadfulness in modern experience."