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