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