Transgressive fiction is a genre of literature that focuses on characters who feel confined by the norms and expectations of society and who break free of those confines in unusual or illicit ways. Because they are rebelling against the basic norms of society, protagonists of transgressive fiction may seem mentally ill, anti-social, or nihilistic. The genre deals extensively with taboo subject matters such as drugs, sexual activity, violence, incest, pedophilia, and crime. The genre of "transgressive fiction" was defined by Los Angeles Times literary critic Michael Silverblatt. Michel Foucault's 1963 essay "A Preface to Transgression" also provides an important methodological origin for the concept of transgression in literature. The essay uses Story of the Eye by Georges Bataille as an example of transgressive fiction. Rene Chun, a journalist for The New York Times, described transgressive fiction thus:

A literary genre that graphically explores such topics as incest and other aberrant sexual practices, mutilation, the sprouting of sexual organs in various places on the human body, urban violence and violence against women, drug use, and highly dysfunctional family relationships, and that is based on the premise that knowledge is to be found at the edge of experience and that the body is the site for gaining knowledge.