The Voice of Merrill is a 1952 British mystery film directed by John Gilling and starring Valerie Hobson, James Robertson Justice and Edward Underdown. The Voice of Merrill was made by Tempean Films, the company owned by the film's producers Monty Berman and Robert S. Baker, which between the late 1940s and the late 1950s specialised in turning out low-budget B-movies as unpublicised second-features for the UK cinema market. On its release however, The Voice of Merrill was recognised by its distributors, Eros Films, as unusually sophisticated and stylish for a B-movie, and was elevated to the status of co-feature in cinemas. It was released in the United States the following year under the title Murder Will Out.

It was made at Twickenham Studios with some location shooting around London. The film's sets were designed by the art director Wilfred Arnold.