Fat Man and Little Boy

Fat Man and Little Boy Cast

52 cast members · 27 with popularity data

Full Cast

Sorted by Buzz Score · May 13, 2026

Natasha Richardson

Gen. Leslie R. Groves

Kathleen Robinson

John C. McGinley

Richard Schoenfield

Michael Merriman

Kitty Oppenheimer

Melrose Hayden Barry

J. Robert Oppenheimer

#10,749 overall

Alan Oppenheimer

#11,778 overall

Whitney Ashbridge

#11,854 overall

Dr. Kenneth Whiteside

#17,048 overall

#18,598 overall

#21,001 overall

#24,769 overall

Brehon Somervell

#26,054 overall

#27,170 overall

#27,814 overall

Mary Pat Gleason

#28,283 overall

Walker Edmiston

#29,690 overall

Oakridge Doctor

#38,419 overall

#49,443 overall

#56,507 overall

Krzysztof Pieczyński

#60,681 overall

George Kistiakowsky

#62,971 overall

Steven Baigelman

#64,203 overall

Michael Brockman

William "Deke" Parsons

Seth Neddermeyer

Donald MacKechnie

Frank Benettieri Jr.

Roger Cubicciotti

Frank Oppenheimer

Franco Cutietta

Robert Peter Gale

Dr. Louis Hempelman

Wesley Harrison

Peter Oppenheimer

Peter Oppenheimer

David C. Parnes

Harold McDonald

Bill Rubenstein

Ken Strausbaugh

Observation Officer

Walter Sullivan

Dennis Talmudge

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