| Person | Type | Job | Role(s) |
|---|---|---|---|
 A. Arnold Gillespie | Crew | Crew | Special Effects |
 Adrian | Crew | Costume & Make-Up | Costume Designer |
 Blanche Sewell | Crew | Editing | Editor |
 Cedric Gibbons | Crew | Art | Art Direction |
 Douglas Shearer | Crew | Sound | Sound Recordist |
 Edwin B. Willis | Crew | Art | Set Decoration |
 Franz Waxman | Crew | Sound | Original Music Composer |
Gile Steele | Crew | Costume & Make-Up | Costumer |
 Harold Rosson | Crew | Camera | Director of Photography |
 Jack Conway | Crew | Directing | Director |
 James Edward Grant | Crew | Writing | Story |
John Hoffman | Crew | Crew | Special Effects |
 John Lee Mahin | Crew | Writing | Screenplay |
Sam Zimbalist | Crew | Production | Producer |
 Sydney Guilaroff | Crew | Costume & Make-Up | Hairstylist |
 Barbara Bedford | Cast | Actress | Nurse (uncredited) |
 Bert Stevens | Cast | Actor | Hotel Lobby Extra (uncredited) |
 Bess Flowers | Cast | Actress | Worker in McMasters' Office (uncredited) |
 Byron Foulger | Cast | Actor | Geologist |
Carlotta Monti | Cast | Actress | Saloon Hostess Fighting Whitey (uncredited) |
Casey Johnson | Cast | Actor | Little Jack |
 Charles Coleman | Cast | Actor | Parker - McMasters' Butler (uncredited) |
 Charles D. Brown | Cast | Actor | U.S. Marshal Stebbins (uncredited) |
 Chill Wills | Cast | Actor | Harmony Jones |
 Clark Gable | Cast | Actor | Big John McMasters |
 Claudette Colbert | Cast | Actress | Betsy Bartlett |
 Curt Bois | Cast | Actor | Ferdie the Tailor |
 Dick Curtis | Cast | Actor | Hiring Boss (uncredited) |
 Douglas Wood | Cast | Actor | Oil Man at New York Meeting (uncredited) |
 Earle Hodgins | Cast | Actor | Rodeo Barker (uncredited) |
 Eddie Dunn | Cast | Actor | Wildcatter (uncredited) |
 Eddy Waller | Cast | Actor | Hotel Clerk (uncredited) |
 Francis X. Bushman Jr. | Cast | Actor | Man with Nitroglycerine (uncredited) |
 Frank Hagney | Cast | Actor | Man Abandoned by Whitey (uncredited) |
 Frank McGlynn Sr. | Cast | Actor | Deacon |
 Frank McLure | Cast | Actor | Man in Hotel Lobby (uncredited) |
 Frank Morgan | Cast | Actor | Luther Aldrich |
 Frank Orth | Cast | Actor | Barber |
 Franklyn Farnum | Cast | Actor | Alarmed Townsman (uncredited) |
 George Guhl | Cast | Actor | Baggage Man (uncredited) |
 George Lessey | Cast | Actor | Judge |
 Hank Bell | Cast | Actor | Hank - Man in Dance Hall (uncredited) |
 Harry Hayden | Cast | Actor | Smith - the Architect (uncredited) |
 Harry Wilson | Cast | Actor | Townsman (uncredited) |
 Hedy Lamarr | Cast | Actress | Karen Vanmeer |
 Helen Dickson | Cast | Actress | Mrs. Summers (uncredited) |
 Henry Roquemore | Cast | Actor | Mr. Summers (uncredited) |
 Holmes Herbert | Cast | Actor | Doctor (uncredited) |
 Horace Murphy | Cast | Actor | Tom Murphy |
 Howard Hickman | Cast | Actor | McCreery's Associate #1 (uncredited) |
 Jack Ingram | Cast | Actor | Oilman at Producers' Convention (uncredited) |
 James Conaty | Cast | Actor | Man Working in McMasters' Office (uncredited) |
 James Dime | Cast | Actor | Townsman (uncredited) |
 Joe Yule | Cast | Actor | Ed Murphy |
 John Hamilton | Cast | Actor | McMasters' Defense Attorney (uncredited) |
 John T. Murray | Cast | Actor | Mr. Springtime (uncredited) |
 Larry Steers | Cast | Actor | Lawyer at Prosecution's Table (uncredited) |
 Lee Phelps | Cast | Actor | Man Fighting Oil Fire (uncredited) |
 Lionel Atwill | Cast | Actor | Harry Compton |
 Marietta Canty | Cast | Actress | Karen's Maid (uncredited) |
 Marion Martin | Cast | Actress | Whitey |
 Milton Parsons | Cast | Actor | Aldrich's Assistant (uncredited) |
 Minna Gombell | Cast | Actress | Spanish Eva |
 Mitchell Lewis | Cast | Actor | Venezuelan Foreman (uncredited) |
 Nell Craig | Cast | Actress | Compton's Secretary |
 Nestor Paiva | Cast | Actor | Venezuelan Officer (uncredited) |
 Pat Flaherty | Cast | Actor | Man at Dice Table (uncredited) |
Philip Morris | Cast | Actor | Oil Man (uncredited) |
 Richard Lane | Cast | Actor | Assistant D.A. |
 Robert Emmett Keane | Cast | Actor | Oilman in New York (uncredited) |
 Roy Gordon | Cast | Actor | McCreery |
Sam Garrett | Cast | Rider / Roper (uncredited) | |
 Sara Haden | Cast | Actress | Miss Barnes |
Sheldon Jett | Cast | Actor | Oil Man at Meeting (uncredited) |
 Shep Houghton | Cast | Actor | Saloon Brawler (uncredited) |
 Spencer Tracy | Cast | Actor | Square John Sand |
Ted Oliver | Cast | Man Asking 4 Bits to Cross (uncredited) | |
Tom Hanlon | Cast | Racetrack Announcer (voice) (uncredited) | |
 Tom London | Cast | Actor | Sheriff Harris (uncredited) |
 Tom Wilson | Cast | Actor | Man in Saloon (uncredited) |
 Wedgwood Nowell | Cast | Actor | Oilman at Producers' Convention (uncredited) |
 William Halligan | Cast | Actor | McCreery's Associate #2 (uncredited) |
 William Tannen | Cast | Actor | Hotel Desk Clerk #1 (uncredited) |
Baby Quintanilla | Cast | Baby Jack | |
| Person | Type | Job | Role(s) |
