Timeslip (U.S. title The Atomic Man) is a 1955 British black-and-white science fiction film directed by Ken Hughes and starring Gene Nelson and Faith Domergue. Produced by Alec C. Snowden, it is based on a script by Charles Eric Maine.

In the UK, the film was distributed by Anglo-Amalgamated. In 1956 the film was shortened from 93 minutes to 76 minutes and distributed in the U.S. by Allied Artists Pictures in some areas as a double feature with Invasion of the Body Snatchers.