A theatre director or stage director is a practitioner in the theatre field who oversees and orchestrates the mounting of a theatre production (a play, an opera, a musical, or a devised piece of work) by unifying various endeavours and aspects of production. The director's function is to ensure the quality and completeness of theatre production and to lead the members of the creative team into realizing their artistic vision for it. The director therefore collaborates with a team of creative individuals and other staff, coordinating research, stagecraft, costume design, props, lighting design, acting, set design and sound design for the production. If the production he or she is mounting is a new piece of writing or a (new) translation of a play, the director may also work with the playwright or translator. In contemporary theatre, the director is generally the primary visionary, making decisions on the artistic concept and interpretation of the text and its staging. Different directors occupy different places of authority and responsibility, depending on the structure and philosophy of individual theatre companies. Directors utilize a wide variety of techniques, philosophies, and levels of collaboration.

The director in theatre history

In ancient Greece, the birthplace of European drama, the writer bore principal responsibility for the staging of his plays. Actors would generally be semi-professionals, and the playwright-director oversaw the mounting of plays from the writing process all the way through to their performances, often - as was the case for Aeschylos for instance - also acting in them. He would also train the chorus, sometimes compose the music and supervise every aspect of production. The term applied to him, didaskalos, the Greek word for "teacher," is indicative of how these early directors had to combine instruction of their performers to staging their work.Brocket, Oscar G.: History of the Theatre. 8th ed. Needham Heights, MA: Allyn & Bacon, 1999, p. 24