Oppenheimer Cast
The cast of Oppenheimer.
Cillian Murphy
as J. Robert Oppenheimer

Cillian Murphy portrays J. Robert Oppenheimer, a brilliant physicist who played a key role in the development of the atomic bomb.

Emily Blunt
as Kitty Oppenheimer

Emily Blunt takes on the character of Kitty Oppenheimer, the wife of J. Robert Oppenheimer and a prominent figure in their personal and professional lives.

Matt Damon
as Leslie Groves

Matt Damon brings to life General Leslie Groves, the military leader overseeing the Manhattan Project and instrumental in its successful execution.

Robert Downey Jr.
as Lewis Strauss

Robert Downey Jr. portrays Lewis Strauss, a key scientific advisor and influential figure in the development of atomic energy.

Florence Pugh
as Jean Tatlock

Florence Pugh embodies Jean Tatlock, a love interest of J. Robert Oppenheimer and a significant influence on his personal and professional journey.

Josh Hartnett
as Ernest Lawrence

Josh Hartnett portrays Ernest Lawrence, a renowned physicist and inventor who contributed significantly to the development of particle accelerators.

Casey Affleck
as Boris Pash

Casey Affleck takes on the character of Boris Pash, a military intelligence officer with a critical role in overseeing security and espionage during the Manhattan Project.

Rami Malek
as David Hill

Rami Malek embodies David Hill, a scientist and key member of the team working on the atomic bomb project alongside J. Robert Oppenheimer.

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