Back from Eternity is a 1956 American drama film about a planeload of people stranded in the South American jungle and subsequently menaced by headhunters. The film stars Robert Ryan, Rod Steiger, Anita Ekberg and Gene Barry. The film is a remake of the 1939 film Five Came Back, also directed and produced by John Farrow. Richard Carroll, who is credited with writing the story for Back from Eternity, wrote the original story for Five Came Back.

Robert Bushnell Ryan was an American actor and activist. Known for his portrayals of hardened cops and ruthless villains, Ryan performed for over three decades. He was nominated for the Academy Award for Best Supporting Actor for his role in the film noir drama Crossfire (1947).