The White Unicorn is a 1947 British drama film directed by Bernard Knowles and starring Margaret Lockwood, Joan Greenwood, Ian Hunter and Dennis Price. Kyra Vayne appeared as the singer. It was made at Walton Studios by the independent producer John Corfield, and released by General Film Distributors. The film's sets were designed by Norman G. Arnold. It was also known as Milkwhite Unicorn and Bad Sister.

Valentine Dyall was an English character actor. He worked regularly as a voice actor, and was known for many years as "The Man in Black", the narrator of the BBC Radio horror series Appointment with Fear.