The sole survivor of an interplanetary rescue mission lands on the planet of the apes, and uncovers a horrible secret beneath the surface.
Unfortunately the movie Beneath the Planet of the Apes is not yet available on HBO Max.
| Writing | Paul Dehn | Screenplay |
| Crew | L.B. Abbott | Special Effects |
| Camera | Milton Krasner | Director of Photography |
| Sound | Leonard Rosenman | Original Music Composer |
| Crew | Art Cruickshank | Special Effects |
| Art | Jack Martin Smith | Art Direction |
| Directing | Ted Post | Director |
| Editing | Marion Rothman | Editor |
| Writing | Mort Abrahams | Screenplay |
| Art | William J. Creber | Art Direction |
| Production | Arthur P. Jacobs | Producer |
| Sound | David Dockendorf | Sound |
| Sound | Stephen Bass | Sound |
| Writing | Pierre Boulle | Characters |
| Crew | Loren Janes | Stunt Double |
| Crew | Eddie Smith | Stunts |
| Crew | Ellis Burman Jr. | Makeup Effects |
| Production | Mort Abrahams | Associate Producer |
| Crew | Hubie Kerns | Stunts |
| Art | Walter M. Scott | Set Decoration |
| Art | Sven Wickman | Set Decoration |
| Crew | Tony Epper | Stunt Double |
| Crew | Denny Arnold | Stunts |
| Crew | Orwin C. Harvey | Stunts |
| Crew | Paul Stader | Stunt Coordinator |
| Costume & Make-Up | John Chambers | Makeup Designer |
| Crew | Dick Hudkins | Stunts |
| Costume & Make-Up | Sharleen Rassi | Hairstylist |
| Crew | Mickey Gilbert | Stunts |
| Crew | Hank Calia | Stunts |
| Crew | Stan Barrett | Stunts |
| Costume & Make-Up | Daniel C. Striepeke | Makeup Supervisor |
| Crew | Dick Bullock | Stunts |
| Costume & Make-Up | Jan Van Uchelen | Hairstylist |
| Crew | Gary Epper | Stunts |
| Crew | Clyde Hudkins Jr. | Stunts |
| Costume & Make-Up | Peter R.J. Deyell | Makeup Artist |
| Crew | Nick Dimitri | Stunts |
| Crew | Alan Gibbs | Stunts |
| Crew | Kent Hays | Stunts |
| Crew | Jack Williams | Stunts |
| Crew | Eldon Burke | Stunts |
| Crew | Gene LeBell | Stunts |
| Directing | Fred R. Simpson | Assistant Director |
| Costume & Make-Up | Verne Langdon | Special Effects Makeup Artist |
| Costume & Make-Up | Edith Lindon | Makeup Artist |
| Costume & Make-Up | Morton Haack | Costume Designer |
| Crew | Terry Leonard | Stunts |
| Crew | Hubie Kerns Jr. | Stunts |
| Crew | Eddie Hice | Stunts |
| Crew | Walter Scott | Stunts |
| Crew | Gary McLarty | Stunts |
| Crew | Whitey Hughes | Stunts |
| Lighting | Fred Hall | Gaffer |
| Camera | Arthur Gerstle | Assistant Camera |
| Directing | Chuck Roberson | Second Unit Director |
| Writing | Pierre Boulle | Novel |
