The Serpent's Egg is a 1977 American-West German drama film written and directed by Ingmar Bergman and starring David Carradine and Liv Ullmann. The story is set in 1920s Berlin and features English and German dialogue. It was Bergman's only Hollywood film. The title is taken from a line spoken by Brutus in Shakespeare's Julius Caesar: "And therefore think him as a serpent's egg / Which hatch'd, would as his kind grow mischievous; / And kill him in the shell". Even though the film was a critical and commercial failure upon its initial release, Bergman was reported to be happy with the film.

Ernst Ingmar Bergman was a Swedish film and theatre director and screenwriter. Widely considered one of the greatest and most influential film directors of all time, his films have been described as "profoundly personal meditations into the myriad struggles facing the psyche and the soul". Some of his most acclaimed works include The Seventh Seal (1957), Wild Strawberries (1957), Persona (1966) and Fanny and Alexander (1982), which were included in the 2012 edition of Sight & Sound's Greatest Films of All Time. He was also ranked No. 8 on the magazine's 2002 "Greatest Directors of All Time" list.