Her Majesty's Theatre is a West End theatre situated on Haymarket in the City of Westminster, London. The present building was designed by Charles J. Phipps and was constructed in 1897 for actor-manager Herbert Beerbohm Tree, who established the Royal Academy of Dramatic Art at the theatre. In the early decades of the 20th century, Tree produced spectacular productions of Shakespeare and other classical works, and the theatre hosted premieres by major playwrights such as George Bernard Shaw, J. M. Synge, Noël Coward and J. B. Priestley. Since the First World War, the wide stage has made the theatre suitable for large-scale musical productions, and the theatre has accordingly specialised in hosting musicals. The theatre has been home to record-setting musical theatre runs, notably the First World War sensation Chu Chin Chow and the most recent production, Andrew Lloyd Webber's The Phantom of the Opera, which played continuously at Her Majesty's between 1986 and March 2020.
The theatre was established by architect and playwright John Vanbrugh, in 1705, as the Queen's Theatre.