Name	Known for
Harold Agnew Self Self See fewer	Price for Peace (2002)
Jeremy Bernstein Self Self See fewer	The Nuclear Expedition
Robert Christy Self Self See fewer	The Trials of J. Robert Oppenheimer (2010)
Michael Cumpsty Prosecutor Roger Robb Prosecutor Roger Robb See fewer	The Ice Storm (1997)
Freeman Dyson Self Self See fewer	The Nuclear Expedition
Boyd Gaines The Voice of Chairman Gray The Voice of Chairman Gray See fewer	Heartbreak Ridge (1986)
Daniel Gerroll Colonel Pash Colonel Pash See fewer	Drop Dead Fred (1991)
Roy J. Glauber Self Self See fewer	Hiroshima: The Aftermath (2015)
David Goldberger Self Self See fewer	Mighty Ira (2020)
Ellen Katz The Stenographer The Stenographer See fewer	The Trials of J. Robert Oppenheimer (2010)
Joseph McCarthy Self (archive footage) Self (archive footage) See fewer	American Forum of the Air (1950)
Priscilla McMillan Self Self See fewer	The Assassination & Mrs. Paine (2022)
J. Robert Oppenheimer Self (archive footage) Self (archive footage) See fewer	Panorama (I) (1953)
Richard Rhodes Self Self See fewer	Troublesome Creek: A Midwestern (1995)
Campbell Scott Narrator Narrator See fewer	Big Night (1996)
Martin Sherwin Self (as Martin J. Sherwin) Self (as Martin J. Sherwin) See fewer	Oppenheimer (I) (2023)
David Strathairn J. Robert Oppenheimer J. Robert Oppenheimer See fewer	Good Night, and Good Luck. (2005)
Michael Stuhlbarg Edward Teller Edward Teller See fewer	A Serious Man (2009)
Herbert York Self Self See fewer	Pandora's Box (1992)