The Lost Planet may refer to:
The Lost Planet (serial), a 1953 American science fiction serial film The Lost Planet (novel), a 1953 juvenile science fiction novel by Angus MacVicar The Lost Planet (Des Moines), the former dumping site for lime filtered out of the water supply of Des Moines, Iowa The Lost Planet, a working title of Lost Planet Airmen, a 1951 American science fiction film See also Lost Planet, a video game series