Weird fiction is usually characterized as a blend of horror, fantasy, and science fiction.
It is most often associated with H.P. Lovecraft, although he's often referred to as a horror writer.
Modern examples of Weird Fiction are sometimes called New Weird. Writers Ann and Jeff VanderMeer define New Weird as "a type of urban, secondary-world fiction that subverts the romanticized ideas about place found in traditional fantasy, largely by choosing realistic, complex real-world models as the jumping off point for creation of settings that may combine elements of both science fiction and fantasy." A celebrated New Weird writer is China Mieville.
Weird fiction is not a very populated genre at this moment in time. Book Country's genre map will continue to change as new literary categories emerge and others fall out of fashion. If you write weird fiction, explore this genre to connect with other like-minded writers, workshop, and publish your book.