The Viper is a 1938 British slapstick comedy film directed by Roy William Neill and starring Claude Hulbert, Betty Lynne and Hal Walters.
The film was a sequel to the previous year's very successful The Vulture, with Hulbert and Walters reprising their roles as hapless private detective Cedric Gull and his sidekick Stiffy respectively.
Directorial duties passed to Neill as Ralph Ince, the director of The Vulture, had been killed in a road accident shortly after the film's release.
The film was not the box-office success its predecessor had been, and it was suggested that cinemagoers were beginning to tire of Hulbert's disguises and slapstick routines.
Kine Weekly observed that the film held little appeal other than to Hulbert's die-hard fans and that "considerable expense has apparently gone in the production of gadgets and stunts for this picture which would have been better devoted to a more humorous story and funnier dialogue".