 Glenn FordSam McBane | Sam McBane |
 Jane RussellSelf | Self |
 Rod TaylorCaptain Jack Savage | Captain Jack Savage |
 Suzanne PleshetteMartha Webster | Martha Webster |
 Nancy KwanSally Fraser | Sally Fraser |
 Wally CoxRalph Bundy | Ralph Bundy |
 Nehemiah PersoffBen Sawyer | Ben Sawyer |
 Mark StevensMickey Doolan | Mickey Doolan |
 Max ShowalterDan Crawford | Dan Crawford |
 Constance TowersPeg Burke | Peg Burke |
 Howard St. JohnMark Hutchins | Mark Hutchins |
 Robert J. WilkeStillman | Stillman |
 Bert FreedDillon | Dillon |
 Dort ClarkTed Wilson | Ted Wilson |
 Mary WickesMrs. Llewlyn | Mrs. Llewlyn |
 Robert F. SimonProctor | Proctor |
 Stanley AdamsBernie (uncredited) | Bernie (uncredited) |
 Robert AdlerFBI Agent (uncredited) | FBI Agent (uncredited) |
| FFrançois AndréTechnician (uncredited) | Technician (uncredited) |
 Al BainInquiry Board Spectator (uncredited) | Inquiry Board Spectator (uncredited) |
| EEvadne BakerSecretary (uncredited) | Secretary (uncredited) |
| TTony BarrCoordinator (uncredited) | Coordinator (uncredited) |
| BBrandon BeachInquiry Board Spectator (uncredited) | Inquiry Board Spectator (uncredited) |
| DDavid BedellTechnician (uncredited) | Technician (uncredited) |
 Jim BolesAirline Passenger (uncredited) | Airline Passenger (uncredited) |
| GGeorge BruggemanParty Guest (uncredited) | Party Guest (uncredited) |
| RRusty BurrellNews Reporter (uncredited) | News Reporter (uncredited) |
| MMarianna CaseD'Arcy (uncredited) | D'Arcy (uncredited) |
| DDick CherneySoldier (uncredited) | Soldier (uncredited) |
 Booth ColmanTechnician (uncredited) | Technician (uncredited) |
