The Lost Planet

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