Semi-Monde is a play written by Noël Coward in 1926, but not produced until 1977. Set in the foyer, lounge and bars of a grand Paris hotel, the play follows the lives of a variety of socialites over a three-year period from 1925. It is notable among works of the period for its prominent treatment of sexuality, both straight and gay.

Coward wrote the play during a long American tour starring in his play The Vortex. The piece is set in the public rooms of a grand hotel in Paris over a period of three years. In the published text the hotel is unnamed, but Coward said it was based on the Ritz and originally titled the play Ritz Bar;^[1] the Ritz in Paris, like its namesake in London, had a bar known for its gay clientele.^[2]

The author said of the play a decade after he wrote it, "It was well constructed and, on the whole, well written", but added that its production in London or New York had seemed unlikely "as some of the characters, owing to lightly suggested abnormalities, would certainly be deleted by the censor".^[1] Basil Dean announced plans to produce the work in the US, but this failed to materialise.^[3] The German producer Max Reinhardt expressed interest in the play, which was translated into German. His planned production never reached the stage, and, as Coward put it, "eventually Vicki Baum wrote Grand Hotel, and Semi-Monde, being too closely similar in theme, faded gently into oblivion".^[1]

Semi-Monde, was first produced on 11 September 1977 by the Glasgow Citizens Theatre, directed by Philip Prowse. The production ran for 21 performances.^[4]

In Mander and Mitchenson's Theatrical Companion to Coward, the authors write that it is impossible to synopsise Semi-Monde in detail because so much of it consists of passing incidental action as characters come and go, but the world of the play is "one of shrieking, bitchy, self-conscious intrigue … probably the most accurate stage representation of the twenties milieu Coward inhabited that we have".^[7]

Coward's biographer Philip Hoare summarises the piece thus:

The first act presents the various characters. It is set in the hotel lobby, bars and lounge across the three years 1925–1927, and opens with a newly-wed, Tanis Marshall, awaiting her husband, Owen. Coward then introduces queer couples: Inez Zuleika and Cynthia Gable bicker at each other, and Beverley Ford has a younger man, Cyril Hardacre, in tow. They are joined by the camp Albert Hennick. The Companion remarks that "clandestine affairs and betrayal feature prominently in a decadent atmosphere"^[7]

In the second act the tensions of the first come to the surface. A couple seen honeymooning in Act 1 are by now having affairs: the man (Owen) with the daughter (Norma) of his wife's lover (Jerome).^[9] At the climax one of the straight characters shoots a rival in the bar. In Hoare's words:

Jerome sums up events: "We're all silly animals, gratifying our beastly desires, covering them with a veneer of decency and good behaviour. ... There's nothing to be done, you know – nothing at all".^[10]