Bulldog Drummond's Secret Police is a 1939 country house murder mystery film directed by James P. Hogan. It uses flashbacks and dream sequences extensively, which has led some to criticize it as tiresome. Oddly, despite the phrase 'Secret Police' in the title, there is nothing relating to the secret police in the plot whatsoever. The production values are high as the sets are of high quality, but the script has not received much acclaim.

The film is noteworthy for an early appearance of actor Leo G. Carroll.