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)
Set Decoration Buyer
Set Designer
Sound Effects Editor
Stunt Coordinator
Grip
Camera Technician
Location Scout
Location Manager
Imaging Science
Director
Producer
Producer
Writer
Producer
Editor
Original Music Composer
Director of Photography
Casting
Production Design
Set Decoration
Costume Design
Construction Coordinator
Set Designer
Set Designer
Special Effects Supervisor
Sound Designer
Visual Effects Supervisor
Driver
Hairstylist
Driver
Unit Production Manager
First Assistant Sound Editor
Sound Mixer
Dialogue Editor
Foley Editor
Boom Operator
Foley Artist
Sound Re-Recording Mixer
Boom Operator
Visual Effects Producer
Visual Effects Producer
Visual Effects Supervisor
Visual Effects Production Manager
Stunt Driver
Stunts
Stunts
Stunts
Stunt Double
Stunt Driver
Stunts
Stunts
Set Costumer
Set Costumer
Costumer
Costumer
Costumer
Ager/Dyer
Set Costumer
Costume Supervisor
Costumer
Assistant Costume Designer
Set Costumer
Key Costumer
Costumer
Set Costumer
Seamstress
Costumer
Assistant Editor
Assistant Editor
Assistant Editor
First Assistant Editor
First Assistant Editor
Assistant Editor
Assistant Editor
Assistant Editor
Assistant Location Manager
Location Manager
Location Assistant
Location Scout
Assistant Location Manager
Assistant Location Manager
Assistant Location Manager
Location Scout
Assistant Location Manager
Location Manager
Assistant Location Manager
Script Supervisor
Driver
Transportation Coordinator
Driver
Driver
Key Makeup Artist
Hairstylist
Key Hair Stylist
Makeup Artist
Second Second Assistant Director
Second Assistant Director
Additional Second Assistant Director
First Assistant Director
Second Assistant Director
Assistant Art Director
Assistant Art Director
Property Master
Set Dresser
Art Department Coordinator
Propmaker
Assistant Property Master
Carpenter
Construction Foreman
Set Designer
Assistant Art Director
Art Department Assistant
Props
Art Department Assistant
Leadman
Assistant Set Decoration
Set Designer
Set Decoration Buyer
Assistant Property Master
Construction Coordinator
Painter
Props
Graphic Designer
Set Dresser
Art Department Assistant
Set Dresser
Set Dresser
Set Decoration Buyer
Set Decoration Buyer
Aerial Director of Photography
Lighting Technician
Key Grip
Still Photographer
Grip
First Assistant "A" Camera
Aerial Camera Technician
Grip
Additional Director of Photography
Still Photographer
Rigging Grip
Best Boy Grip
Lighting Technician
Dolly Grip
Grip
Electrician
First Assistant "B" Camera
Additional First Assistant Camera
Rigging Grip
Key Rigging Grip
Key Rigging Grip
Lighting Technician
Electrician
Set Production Assistant
Book
Book
Sound Re-Recording Mixer
Set Decoration
Makeup Department Head
Stunt Driver
On Set Dresser
Studio Teacher
Makeup Artist
Hair Department Head
Special Effects
Compositing Supervisor
Compositor
Executive Producer
Executive Producer
Executive Producer
Co-Producer
Unit Production Manager
Unit Production Manager
Additional Editor
Stunts
Hairstylist
Hairstylist
Prosthetic Designer
Supervising Art Director