The Clue of the New Pin is a 1929 all-talking sound British crime film directed by Arthur Maude and starring Benita Hume, Kim Peacock, and Donald Calthrop. The soundtrack was recorded using the British Phototone sound-on-disc system. It was made at Beaconsfield Studios. This film is important historically as being Britain's first all-talking feature film produced entirely in Britain. The first all-talking British feature production, a film entitled Black Waters, had been produced in the United States due to a lack of sound recording equipment in Britain.

The film was one of only 10 filmed in British Phototone, a sound-on-disc system which used 12-inch discs. All of the other nine films made in this process were short films. In March 1929, this film and The Crimson Circle, filmed in the De Forest Phonofilm sound-on-film system, were 'trade-shown' to cinema exhibitors.

This film is an adaptation of the 1923 novel The Clue of the New Pin by Edgar Wallace. It was later remade in 1961.