Kronos (a.k.a. Kronos, Destroyer of the Universe or Kronos, Ravager of Planets) is a 1957 American black-and-white science fiction film from Regal Films, a division of 20th Century-Fox. It was produced by Irving Block, Louis DeWitt, Kurt Neumann, and Jack Rabin, directed by Kurt Neumann, and stars Jeff Morrow and Barbara Lawrence. Kronos was distributed as a double feature with She Devil.

Since the film's release, it has been widely praised for its above-average storyline and its farsighted portrayal of the consequences of over-consumption of both natural and man-made resources; it has achieved minor cult status as a result.