Emily Blunt Kitty Oppenheimer
Cillian Murphy J. Robert Oppenheimer
Matt Damon Leslie Groves
Robert Downey Jr. Lewis Strauss
Christopher Nolan Director, Producer, Writer
Rami Malek David Hill
Florence Pugh Jean Tatlock
Gary Oldman Harry Truman
Dane DeHaan Kenneth Nichols
Kenneth Branagh Niels Bohr
Josh Hartnett Ernest Lawrence
Matthias Schweighöfer Werner Heisenberg
Jack Quaid Richard Feynman
James Remar Henry Stimson
Matthew Modine Vannevar Bush
James Woods Executive Producer
Casey Affleck Boris Pash
Emma Thomas Producer
Gustaf Skarsgård Hans Bethe
Michael Angarano Robert Serber
Jason Clarke Roger Robb
David Rysdahl Donald Hornig
Charles Roven Producer
Devon Bostick Seth Neddermeyer
Jaron Whitfill Camera Technician
Richard Molloy Additional Second Assistant Director
James D'Arcy Patrick Blackett
David Krumholtz Isidor Rabi
Tony Goldwyn Gordon Gray
Gregory Jbara Chairman Magnuson
Macon Blair Lloyd Garrison
Scott Grimes Counsel
Tom Jenkins Richard Tolman
Guy Burnet George Eltenton
Richard King Sound Designer, Supervising Sound Editor
Brett DelBuono Concerned Scientist
David Dastmalchian William Borden
Alex Wolff Luis Alvarez
Benny Safdie Edward Teller
Josh Peck Kenneth Bainbridge
Alden Ehrenreich Senate Aide
Olivia Thirlby Lilli Hornig
Dylan Arnold Frank Oppenheimer
Ludwig Göransson Original Music Composer
Josh Zuckerman Rossi Lomanitz
Nathan Kelly Unit Production Manager
Tom Conti Albert Einstein
Terry Jackson Stunts
Harry Groener Senator McGee
Trond Fausa Aurvåg George Kistiakowsky
Bryce Johnson AAF Officer 2
Hans Bjerno Aerial Director of Photography
Ruth De Jong Production Design
Máté Haumann Leo Szilard
Tim DeKay Senator Pastore
Danny Downey Stunts
Jason Gary Best Boy Grip
Kerry Westcott Laughing Woman
David Drzewiecki Visual Effects Supervisor
James Urbaniak Kurt Gödel
Drew Kenney Soldier
Petrie Willink Dutch Student
Christina Hogue Kissing Woman
Steve Gehrke Script Supervisor
Jefferson Hall Haakon Chevalier
Kate French Presidential Aide
Jason Hamer Prosthetic Designer
Eric Luling On Set Dresser
Duffy Gaver Stunts
Steve DeCastro Stunts
Sadie Stratton Mary Washburn
Michael Andrew Baker Joe Volpe