Mary Had a Little... is a 1961 British comedy film directed by Edward Buzzell and starring Agnès Laurent, Hazel Court and Jack Watling.

[2] It takes its title from the nursery rhyme Mary Had a Little Lamb and is about a slick impresario who tries unsuccessfully to win a bet with a psychiatrist over the production of a perfect baby via hypnotism.

[4] The screenplay was based on the play of the same name by Arthur Herzog Jr., Muriel Herman and Al Rosen, which had its West End opening at the Strand Theatre on 27 November 1951 in a production directed by Ralph Lynn.

The completed film turned out to be Buzzell's final directorial assignment and also the penultimate credit for Agnès Laurent.

Having opened in Los Angeles on 25 July 1961, the film went into general release in the UK on 3 August.