Oppenheimer

Sam Waterston

Robert Oppenheimer

John Carson

Narrator

Jana Shelden

Kitty Oppenheimer

Christopher Muncke

Colonel Kenneth Nichols

Edward Hardwicke

Enrico Fermi

David Suchet

Edward Teller

Peter Whitman

Robert Serber

Manning Redwood

General Leslie Groves

Matthew Guinness

Hans Bethe

John Morton

Robert Wilson

Bob Sherman

Ernest Lawrence

Garrick Hagon

Frank Oppenheimer

Barry Dennen

Isidor Rabi

Liza Ross

Jacky Oppenheimer

Kate Harper

Jean Tatlock

Erica Stevens

Charlotte Serber

Peter Marinker

Haakon Chevalier

Ron Berglas

John Manley

Blain Fairman

Robert Bacher

Anthony Forrest

Rossi Lomanitz

Christopher Malcolm

Steve Nelson

William Hootkins

FBI Agent

John Cassady

FBI Agent

David Baxt

Colonel John Lansdale

Rosemary Faith

Mitzi Teller

Sarah Brackett

Priscilla Duffield

Billy J. Mitchell

Captain 'Deke' Parsons

Colin Bennett

Seth Neddermeyer

Milton Johns

George Kistiakowsky

Douglas Lambert

Kenneth Bainbridge

Nigel Anthony

Scientist

Peter Banks

Joseph Volpe

Phil Brown

Lewis Strauss

Daniel Foley

Joseph Weinberg

James Smith

Dr Harrison

Michael Ryan

Student

Carl Haugland

Student

Raymond Marlowe

Businessman

Ed Devereaux

General Wilhelm Styer

David Oliver

Emil Konopinski