The St James's Theatre was in King Street, St James's, London. It opened in 1835 and was demolished in 1957. The theatre was conceived by and built for a popular singer, John Braham; it lost money and after three seasons he retired. A succession of managements over the next forty years also failed to make it a commercial success, and the St James's acquired a reputation as an unlucky theatre. It was not until 1879–1888, under the management of the actors John Hare and Madge and W. H. Kendal that the theatre began to prosper.

The Importance of Being Earnest, a Trivial Comedy for Serious People is a play by Oscar Wilde. First performed on 14 February 1895 at the St James's Theatre in London, it is a farcical comedy in which the protagonists maintain fictitious personae to escape burdensome social obligations. Working within the social conventions of late Victorian London, the play's major themes are the triviality with which it treats institutions as serious as marriage and the resulting satire of Victorian conformity. Some contemporary reviews praised the play's humour as the culmination of Wilde's artistic career, while others were cautious about its lack of social messages. Its high farce and witty dialogue have helped make The Importance of Being Earnest a very popular play.