The Palace Theatre is a West End theatre in the City of Westminster in London. Its red-brick facade dominates the west side of Cambridge Circus behind a small plaza near the intersection of Shaftesbury Avenue and Charing Cross Road. The Palace Theatre seats 1,400.

Richard D’Oyly Carte, the producer of the Gilbert and Sullivan operas, commissioned the theatre in the late 1880s. It was designed by Thomas Edward Collcutt and intended to be a home of English grand opera. The theatre opened as the Royal English Opera House in January 1891 with a lavish production of Arthur Sullivan’s opera Ivanhoe. Although this ran for 160 performances, followed briefly by André Messager’s La Basoche, Carte had no other works ready to fill the theatre. He leased it to Sarah Bernhardt for a season and sold the opera house within a year at a loss. It was then converted into a grand music hall and renamed the Palace Theatre of Varieties, managed successfully first by Sir Augustus Harris and then by Charles Morton. In 1897, the theatre began to screen films as part of its programme of entertainment. In 1904, Alfred Butt became manager and continued to combine variety entertainment, including dancing girls, with films. Herman Finck was a musical director at the theatre from 1900 until 1920.

The theatre was Grade II listed by English Heritage in June 1960. It is one of the 40 theatres featured in the 2012 DVD documentary series Great West End Theatres, presented by Donald Sinden. In April 2012, Lloyd Webber’s Really Useful Group sold the building to Nimax Theatres (Nica Burns and Max Weitzenhoffer). Nimax purchased the Apollo, Duchess, Garrick and Lyric Theatres from Really Useful in 2005