| Person | Type | Job | Role(s) |
|---|---|---|---|
 Abe Haberman | Crew | Costume & Make-Up | Makeup Artist |
Arnold Laven | Crew | Directing | Director |
Arthur Gardner | Crew | Production | Producer |
Augie Lohman | Crew | Crew | Special Effects |
Charles Althouse | Crew | Sound | Sound Mixer, Sound Recordist |
David Duncan | Crew | Writing | Story |
Heinz Roemheld | Crew | Sound | Original Music Composer, Music Director, Conductor |
James Dowell Vance | Crew | Art | Art Direction |
Joel Moss | Crew | Sound | Sound Recordist |
John Faure | Crew | Editing | Editor |
Jules V. Levy | Crew | Production | Producer |
Kerwin Coughlin | Crew | Production | Casting |
Lester White | Crew | Camera | Director of Photography |
Maurice Vaccarino | Crew | Directing | Assistant Director |
Olga Collings | Crew | Costume & Make-Up | Hairstylist |
Pat Fielder | Crew | Writing | Screenplay |
Paul Eagler | Crew | Camera | Other |
Paul Stader | Crew | Directing | Other |
Robert H. Crandall | Crew | Crew | Other |
Rudy Butler | Crew | Art | Set Decoration |
Scotty Welbourne | Crew | Camera | Underwater Director of Photography |
Ted Haworth | Crew | Crew | Other |
B. F. Remmington | Crew | Sound | Sound Recordist |
Allen Sloane | Crew | Costume & Make-Up | Wardrobe Supervisor |
Norman Bishop | Crew | Crew | Technical Supervisor |
Virginia Mazzuca | Crew | Production | Production Assistant |
 Audrey Dalton | Cast | Actress | Gail MacKenzie |
 Barbara Darrow | Cast | Actress | Jody Simms |
 Charles Herbert | Cast | Actor | Boy with Morty's Cap |
 Charles Tannen | Cast | Actor | Seaman Wyatt (Radioman) |
Dan Gachman | Cast | Deputy Brewer | |
 David McMahon | Cast | Actor | Patterson |
Dennis McCarthy | Cast | Actor | George Blake (lab assistant) |
Gil Frye | Cast | Actor | Deputy Scotty |
 Gordon Jones | Cast | Actor | Sheriff Josh Peters |
 Hal Taggart | Cast | Actor | Davis - Resort Owner |
 Hans Conried | Cast | Actor | Dr. Jess Rogers |
 Harlan Warde | Cast | Actor | Lt. Robert 'Clem' Clemens |
 Jody McCrea | Cast | Actor | Seaman Fred Johnson |
John Close | Cast | Actor | Deputy Larry |
 Joseph Hamilton | Cast | Actor | Other Lock Watchman |
Marjorie Stapp | Cast | Actress | Connie Blake |
 Max Showalter | Cast | Actor | Dr. Tad Johns |
Michael Dugan | Cast | Actor | Clarke |
 Milton Parsons | Cast | Actor | Lewis Clark Dobbs |
 Mimi Gibson | Cast | Actress | Sandy MacKenzie |
Ralph Littlefield | Cast | Actor | Gatekeeper |
 Ralph Moody | Cast | Actor | Watchman at Lock 57 |
 Sarah Selby | Cast | Actress | Mrs. Simms |
 Tim Holt | Cast | Actor | Lt. Cmdr. John 'Twill' Twillinger |
 William Forrest | Cast | Actor | Admiral Greenhouse |
 William Swan | Cast | Actor | Seaman Howard Sanders |
 Byron Kane | Cast | Actor | Coroner Nate Brown |
 Mack Williams | Cast | Captain Masters | |
 Wallace Earl | Cast | Actress | Sally |
Robert Benevides | Cast | Actor | Seaman Morty Beatty |
 John Carlyle | Cast | Monster Victim | |
| Person | Type | Job | Role(s) |
