J. Robert Oppenheimer
Kitty Oppenheimer
Leslie Groves
Lewis Strauss
Jean Tatlock
Ernest Lawrence
Boris Pash
David Hill
Niels Bohr
Edward Teller
Roger Robb
Frank Oppenheimer
Albert Einstein
Patrick Blackett
William Borden
Kenneth Nichols
Senate Aide
Gordon Gray
Haakon Chevalier
Isidor Rabi
Vannevar Bush
Counsel
Thomas Morgan
Ward Evans
Lloyd Garrison
Senator McGee
Chairman Magnuson
Senator Bartlett
Senator Pastore
Senator Scott
Dutch Student
Werner Heisenberg
Luis Alvarez
Rossi Lomanitz
Hartland Snyder
Robert Serber
Jackie Oppenheimer
Mary Washburn
Barbara Chevalier
George Eltenton
Richard Tolman
Ruth Tolman
Joe Volpe
Congressman
Edward Condon
Donald Hornig
Kenneth Bainbridge
Richard Feynman
Concerned Scientist
Hans Bethe
Kurt Gödel
George Kistiakowsky
Seth Neddermeyer
Enrico Fermi
Klaus Fuchs
Charlotte Serber
J. Ernest Wilkins
Leo Szilard
Lilli Hornig
Lyall Johnson
Philip Morrison
Henry Stimson
George C. Marshall
James Byrnes
James Conant
AAF Officer
Weatherman
Army Captain
Soldier
AAF Officer 2
Burn Victim
Laughing Woman
Kissing Woman
Kissing Man
Weeping Man
Consoling Woman
Presidential Aide
Harry Truman
Lyndon Johnson
Senator's Assistant (uncredited)
Sound Effects Editor
Stunt Coordinator
Location Manager
Set Decoration Buyer
Location Scout
Set Designer
Camera Technician
Grip
Imaging Science
Director
Producer
Producer
Writer
Editor
Producer
Original Music Composer
Director of Photography
Costume Design
Set Decoration
Construction Coordinator
Sound Designer
Set Designer
Set Designer
Special Effects Supervisor
Visual Effects Supervisor
Driver
Casting
Production Design
Hairstylist
Driver
Unit Production Manager
Stunt Driver
Visual Effects Producer
Stunt Double
Costumer
Assistant Editor
Location Assistant
Boom Operator
Sound Re-Recording Mixer
Visual Effects Production Manager
Stunts
Stunt Driver
Ager/Dyer
Driver
Foley Editor
First Assistant Sound Editor
Foley Artist
Stunts
Stunts
Set Costumer
Driver
Dialogue Editor
Costumer
Assistant Editor
Assistant Location Manager
Boom Operator
Visual Effects Supervisor
Visual Effects Producer
Stunts
Stunts
Sound Mixer
Set Costumer
Key Costumer
First Assistant Editor
Costumer
Location Scout
Assistant Location Manager
Driver
Assistant Editor
Transportation Coordinator
Set Costumer
Assistant Location Manager
Script Supervisor
Assistant Editor
Location Scout
Costumer
Costume Supervisor
Assistant Costume Designer
Costumer
First Assistant Editor
Assistant Editor
Set Costumer
Costumer
Assistant Editor
Assistant Location Manager
Assistant Location Manager
Seamstress
Location Manager
Assistant Location Manager
Location Manager
Set Costumer
Key Makeup Artist
Assistant Art Director
Art Department Assistant
Second Second Assistant Director
Carpenter
Construction Coordinator
Assistant Set Decoration
Assistant Property Master
Assistant Property Master
Graphic Designer
Art Department Assistant
Leadman
Props
Set Designer
Additional Second Assistant Director
First Assistant Director
Assistant Art Director
Propmaker
Set Decoration Buyer
Second Assistant Director
Set Dresser
Props
Hairstylist
Assistant Art Director
Construction Foreman
Key Hair Stylist
Second Assistant Director
Set Designer
Makeup Artist
Property Master
Art Department Coordinator
Painter
Electrician
Set Decoration Buyer
Aerial Camera Technician
Rigging Grip
Lighting Technician
Set Dresser
Best Boy Grip
Lighting Technician
Key Grip
Electrician
Additional Director of Photography
Additional First Assistant Camera
Grip
Set Dresser
Aerial Director of Photography
Grip
Set Dresser
Set Decoration Buyer
Still Photographer
Art Department Assistant
First Assistant "B" Camera
Lighting Technician
Dolly Grip
Grip
Rigging Grip
Still Photographer
First Assistant "A" Camera
Key Rigging Grip
Key Rigging Grip
Set Production Assistant
Book
Book
Sound Re-Recording Mixer
Makeup Department Head
Set Decoration
Stunt Driver
On Set Dresser
Studio Teacher
Hair Department Head
Makeup Artist
Special Effects
Compositing Supervisor
Compositor
Executive Producer
Executive Producer
Unit Production Manager
Executive Producer
Co-Producer
Unit Production Manager
Additional Editor
Stunts
Hairstylist
Hairstylist
Prosthetic Designer