Undercover Maisie is a 1947 American comedy film directed by Harry Beaumont and starring Ann Sothern, Barry Nelson, and Mark Daniels. It was produced by Metro-Goldwyn-Mayer, the final film of the ten film Maisie series starring Ann Sothern as ex-showgirl Maisie Ravier. In this series entry, Maisie Ravier decides to join the Los Angeles police force. The previous film was Up Goes Maisie.