E.J. Mackernutt, Jr., an 11-year-old boy who has always been fascinated by space and astronauts, sneaks into Cape Kennedy and becomes a stowaway on a spaceship scheduled for a lunar landing. After he is discovered, NASA at first cancels the landing, but E.J. and the astronauts convince them to go forward with it. Problems arise when one of the astronauts is incapacitated by illness and the other two are stranded on the moon's surface, but E.J. is able to command the space capsule and save the day.
Unfortunately the movie Stowaway to the Moon is not yet available on HBO Max.
| Writing | Jon Boothe | Writer |
| Directing | Andrew V. McLaglen | Director |
| Art | Allen E. Smith | Art Direction |
| Sound | Patrick Williams | Original Music Composer |
| Camera | J.J. Jones | Director of Photography |
| Production | John Cutts | Producer |
| Editing | John F. Schreyer | Editor |
| Writing | William R. Shelton | Novel |
| Production | Carl Kugel | Associate Producer |
| Production | Maurie M. Suess | Unit Production Manager |
| Production | Mark Evans | Production Supervisor |
| Art | Robert De Vestel | Set Decoration |
| Sound | Lionel Newman | Music Supervisor |
| Crew | Joe Zomar | Special Effects |
| Production | Jack Baur | Casting |
| Crew | Joseph Silver | Post Production Supervisor |
| Directing | Jack Barry | Assistant Director |
| Crew | Joe W. Schmitt | Technical Advisor |
