Trailer
Skådespelare
James Remar
Henry Stimson
Josh Peck
Kenneth Bainbridge
Jeremy John Wells
AAF Officer
Matt Damon
Leslie Groves
Ted King
Senator Bartlett
Alex Wolff
Luis Alvarez
Guy Burnet
George Eltenton
Louise Lombard
Ruth Tolman
Gary Oldman
Harry Truman
Meg Schimelpfenig
Senator's Assistant (uncredited)
Florence Pugh
Jean Tatlock
Kurt Koehler
Thomas Morgan
Petrie Willink
Dutch Student
Emma Dumont
Jackie Oppenheimer
Jack Quaid
Richard Feynman
Trond Fausa Aurvåg
George Kistiakowsky
Steve Coulter
James Conant
Christopher Denham
Klaus Fuchs
Olivia Thirlby
Lilli Hornig
David Dastmalchian
William Borden
John Gowans
Ward Evans
Macon Blair
Lloyd Garrison
Rory Keane
Hartland Snyder
Michael Angarano
Robert Serber
Devon Bostick
Seth Neddermeyer
Pat Skipper
James Byrnes
Christina Hogue
Kissing Woman
Josh Hartnett
Ernest Lawrence
Matthias Schweighöfer
Werner Heisenberg
Danny Deferrari
Enrico Fermi
Maria Teresa Zuppetta
Consoling Woman
Gregory Jbara
Chairman Magnuson
Jack Cutmore-Scott
Lyall Johnson
Kerry Westcott
Laughing Woman
Dylan Arnold
Frank Oppenheimer
Sadie Stratton
Mary Washburn
Adam Kroeger
Army Captain
Clay Bunker
Kissing Man
Hap Lawrence
Lyndon Johnson
Emily Blunt
Kitty Oppenheimer
Casey Affleck
Boris Pash
Dane DeHaan
Kenneth Nichols
Jefferson Hall
Haakon Chevalier
David Krumholtz
Isidor Rabi
Jeff Hephner
Congressman
Drew Kenney
Soldier
Cillian Murphy
J. Robert Oppenheimer
Tom Conti
Albert Einstein
Josh Zuckerman
Rossi Lomanitz
Will Roberts
George C. Marshall
Sean Avery
Weatherman
Bryce Johnson
AAF Officer 2
Tyler Beardsley
Weeping Man
Benny Safdie
Edward Teller
Matthew Modine
Vannevar Bush
Tim DeKay
Senator Pastore
Brett DelBuono
Concerned Scientist
James Urbaniak
Kurt Gödel
Ronald Auguste
J. Ernest Wilkins
Harrison Gilbertson
Philip Morrison
Jason Clarke
Roger Robb
Alden Ehrenreich
Senate Aide
David Rysdahl
Donald Hornig
Robert Downey Jr.
Lewis Strauss
Rami Malek
David Hill
Flora Nolan
Burn Victim
Kenneth Branagh
Niels Bohr
Scott Grimes
Counsel
Jessica Erin Martin
Charlotte Serber
James D'Arcy
Patrick Blackett
Harry Groener
Senator McGee
Steven Houska
Senator Scott
Kate French
Presidential Aide
Tony Goldwyn
Gordon Gray
Britt Kyle
Barbara Chevalier
Tom Jenkins
Richard Tolman
Michael Andrew Baker
Joe Volpe
Olli Haaskivi
Edward Condon
Gustaf Skarsgård
Hans Bethe
Máté Haumann
Leo Szilard