Miranda is a 1948 black and white British comedy film, directed by Ken Annakin and written by Peter Blackmore, who also wrote the play of the same name from which the film was adapted. The film stars Glynis Johns, Googie Withers, Griffith Jones, Margaret Rutherford, John McCallum and David Tomlinson. Denis Waldock provided additional dialogue. Music for the film was played by the London Symphony Orchestra, conducted by Muir Mathieson. The sound director was B. C. Sewell.


As his wife is uninterested in fishing, Dr. Paul Martin goes on a holiday on the Cornwall coast without her. There, Miranda, a mermaid, catches him by pulling on his fishing line and making him fall in the water. She drags him down to her underwater cavern where she keeps him prisoner for a week and only lets him go after he agrees to show her London, where he lives. Having ordered several extra long dresses from his wife's London couturier to cover her tail, he disguises her as an invalid patient in a bath chair and takes her to his home, initially for a three weeks stay.