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