Gothic is a 1986 British horror film directed by Ken Russell, starring Gabriel Byrne as Lord Byron, Julian Sands as Percy Bysshe Shelley, Natasha Richardson as Mary Shelley, Myriam Cyr as Claire Clairmont (Mary Shelley's stepsister) and Timothy Spall as Dr. John William Polidori. It features a soundtrack by Thomas Dolby, and marks Richardson's film debut.
The film is a fictionalized retelling of the Shelleys' visit to Lord Byron in Villa Diodati by Lake Geneva, shot in Gaddesden Place. It concerns their competition to write a horror story, which ultimately led to Mary Shelley writing Frankenstein and John Polidori writing The Vampyre. The same event has also been portrayed in the films Bride of Frankenstein (1935) and Haunted Summer (1988), among others.
The film's poster motif is based on Henry Fuseli's painting The Nightmare, which is also referenced in the film. According to Dan Ireland, who later worked with Russell, the film was a big success on video.