| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alexander Golitzen | Crew | Art | Art Direction |
Arthur A. Ross | Crew | Writing | Screenplay, Story |
 Bud Westmore | Crew | Costume & Make-Up | Makeup Supervisor |
Clifford Stine | Crew | Visual Effects | Visual Effects, Visual Effects Camera |
Edward Curtiss | Crew | Editing | Editor |
Heinz Roemheld | Crew | Sound | Original Music Composer |
 Henry Mancini | Crew | Sound | Original Music Composer |
Irving Gertz | Crew | Sound | Original Music Composer |
Jack Kevan | Crew | Costume & Make-Up | Makeup Effects Designer |
Jay A. Morley Jr. | Crew | Costume & Make-Up | Costume Design |
Joan St. Oegger | Crew | Costume & Make-Up | Hairstylist |
John P. Austin | Crew | Art | Set Decoration |
John Sherwood | Crew | Directing | Director |
Leslie I. Carey | Crew | Sound | Sound |
Maury Gertsman | Crew | Camera | Director of Photography |
Robert Emmet Smith | Crew | Art | Art Direction |
Robert Pritchard | Crew | Sound | Sound |
Roger J. Weinberg | Crew | Costume & Make-Up | Costume Design |
Russell A. Gausman | Crew | Art | Set Decoration |
 William Alland | Crew | Production | Producer |
Vincent Romaine | Crew | Costume & Make-Up | Makeup Artist |
George Hoagland | Crew | Sound | Sound Editor |
Eddie Pyle | Crew | Camera | Camera Operator |
Peter Berkos | Crew | Sound | Sound Editor |
Lew Schwartz | Crew | Camera | Assistant Camera |
Max Nippell | Crew | Lighting | Gaffer |
Julius Rosenkrantz | Crew | Art | Props |
Robert L. Bratton | Crew | Sound | Sound Editor |
 David McMahon | Cast | Actor | Capt. Stanley |
 Don Megowan | Cast | Actor | The Gill Man (on land)(uncredited) |
 Frank Chase | Cast | Actor | Steward |
 George Sowards | Cast | Ranch Hand (uncredited) | |
 Gregg Palmer | Cast | Actor | Jed Grant |
 Jeff Morrow | Cast | Actor | Dr. William Barton |
Larry Hudson | Cast | Actor | State Trooper |
 Lillian Molieri | Cast | Actress | Mrs. Morteno |
 Maurice Manson | Cast | Actor | Dr. Borg |
 Paul Fierro | Cast | Actor | Morteno |
 Rex Reason | Cast | Actor | Dr. Thomas Morgan |
 Ricou Browning | Cast | Actor | The Gill Man (in water)(uncredited) |
 Leigh Snowden | Cast | Actress | Marcia Barton |
 James Rawley | Cast | Actor | Dr. Johnson |
| Person | Type | Job | Role(s) |
