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