Antoine Marie Joseph Paul Artaud, better known as Antonin Artaud, was a French artist who is widely recognized as a major figure of the European avant-garde. He worked across a variety of media, but is best known for his writings, as well as his work in the theatre and cinema. He had a profound influence on twentieth-century theatre through his conceptualization of the Theatre of Cruelty. Known for his raw, surreal and transgressive work, his texts explored themes from the cosmologies of ancient cultures, philosophy, the occult, mysticism and indigenous Mexican and Balinese practices.

Twentieth-century theatre describes a period of great change within the theatrical culture of the 20th century, mainly in Europe and North America. There was a widespread challenge to long-established rules surrounding theatrical representation; resulting in the development of many new forms of theatre, including modernism, expressionism, impressionism, political theatre and other forms of Experimental theatre, as well as the continuing development of already established theatrical forms like naturalism and realism.