The Adding Machine is a 1969 British fantasy comedy drama film produced, written, and directed by Jerome Epstein and starring Milo O'Shea, Phyllis Diller, Billie Whitelaw, Sydney Chaplin, and Raymond Huntley.

It is based on a stage production of the 1923 Elmer Rice play The Adding Machine directed by Epstein in Los Angeles in the 1940s.

The setting of The Adding Machine takes place on both Earth and in Heaven. For the film, Epstein set the earthly action in Manhattan in the 1930s during the Great Depression.

The movie was shot at Shepperton Studios outside London. The film's sets were designed by the art director Jack Shampan. It was distributed in the United Kingdom by Universal Pictures.