Fringe theatre is theatre that is produced outside of the main theatre institutions, and that is often small-scale and non-traditional in style or subject matter. The term comes from the Edinburgh Festival Fringe. In London, the fringe are small-scale theatres (often referred to as the London Fringe and not included as West End theatres), and the equivalent of off-Broadway and Off-off-Broadway theatres in New York City, as well as Europe's "free theatre" groups.
In unjuried theatre festivals, also known as fringe festivals or open-access festivals, all submissions are accepted, and sometimes the participating acts may be chosen by lottery, in contrast to juried festivals in which acts are selected based on their artistic qualities. Unjuried festivals (such as the Edinburgh Festival Fringe, Edmonton Fringe Festival, Adelaide Fringe, and Fringe World) permit artists to perform a wide variety of works.