A Cuckoo in the Nest is a farce by the English playwright Ben Travers. It was first given at the Aldwych Theatre, London, the second in the series of twelve Aldwych farces presented by the actor-manager Tom Walls at the theatre between 1923 and 1933. Several of the cast formed the regular core cast for the later Aldwych farces. The plot concerns two friends, a man and a woman, who are each married to other people. While travelling together, they are obliged by circumstances to share a hotel bedroom. Everyone else assumes the worst, but the two travellers are able to prove their innocence.
The piece opened on 22 July 1925 and ran for 376 performances. Travers made a film adaptation, which Walls directed in 1933, with most of the leading members of the stage cast reprising their roles.