LGBT literature is a collective term for literature produced by and for lesbian, gay, bisexual and transgender (LGBT) communities, or which involves characters, plot lines or themes concerning LGBT communities. Lesbian literature, gay pulp and gay science fiction are genres of LGBT fiction which represent some of the earliest incorporation of these "taboo" subjects in contemporary literature. Novels like La Garçonne by Victor Margueritte (1922) and The Well of Loneliness by Radclyffe Hall (1928) are early examples of books with lesbian themes.
LGBT authors, characters and themes are present in all genres of literature, but the increasing amount of LGBT fiction emerging in recent years has established several (if unofficial) subgenres, including LGBT mystery, horror and romance, as well as gay teen and lesbian teen fiction.