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Fat Man and Little Boy
Cast
52 cast members · 27 with popularity data
Movie Stats
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Sorted by Buzz Score · April 30, 2026
1
Laura Dern
Kathleen Robinson
4.6
#718 overall
2
Paul Newman
Gen. Leslie R. Groves
4.2
#836 overall
3
John C. McGinley
Richard Schoenfield
3.8
#1,015 overall
4
Natasha Richardson
Jean Tatlock
3.2
#1,347 overall
5
John Cusack
Michael Merriman
3.0
#1,448 overall
6
Bonnie Bedelia
Kitty Oppenheimer
1.6
#3,503 overall
7
Clark Gregg
Douglas Panton
0.7
#7,482 overall
8
Fred Thompson
Melrose Hayden Barry
0.7
#8,141 overall
9
Dwight Schultz
J. Robert Oppenheimer
0.6
#8,977 overall
10
Alan Oppenheimer
(voice)
0.5
#10,185 overall
11
Ed Lauter
Whitney Ashbridge
0.3
#13,521 overall
12
Todd Field
Robert Wilson
0.3
#14,891 overall
13
Del Close
Dr. Kenneth Whiteside
0.2
#18,804 overall
14
Jim True-Frost
Donald Hornig
0.2
#21,233 overall
15
James Eckhouse
Robert Harper
0.1
#23,203 overall
16
Walker Edmiston
(voice)
0.1
#24,780 overall
17
Mary Pat Gleason
Dora Welsh
0.1
#25,630 overall
18
John Considine
Robert Tuckson
0.1
#26,392 overall
19
Allan Corduner
Franz Goethe
0.1
#29,165 overall
20
Ron Vawter
Jamie Latrobe
0.1
#30,213 overall
21
Logan Ramsey
Brehon Somervell
0.1
#30,252 overall
22
Arthur Holden
Oakridge Doctor
0.1
#34,561 overall
23
Stan Jones
(voice)
0.0
#48,240 overall
24
Gerald Hiken
Leo Szilard
0.0
#50,206 overall
25
Steven Baigelman
Dr. Avenell
0.0
#54,535 overall
26
Krzysztof Pieczyński
Otto Frisch
0.0
#61,688 overall
27
Péter Halász
George Kistiakowsky
0.0
#64,245 overall
28
Ron Frazier
Peter de Silva
—
29
Michael Brockman
William "Deke" Parsons
—
30
Joe D'Angerio
Seth Neddermeyer
—
31
Jon DeVries
Johnny Mount
—
32
Donald MacKechnie
James Tuck
—
33
Madison Mason
Boris Pash
—
34
Don Pugsley
Bronston
—
35
Barry Yourgrau
Edward Teller
—
36
Marek Alboszta
Scientist
—
37
Frank Benettieri Jr.
Messenger
—
38
Roger Cubicciotti
Frank Oppenheimer
—
39
Franco Cutietta
Enrico Fermi
—
40
Robert Peter Gale
Dr. Louis Hempelman
—
41
Wesley Harrison
Peter Oppenheimer
—
42
Brent Harrison
Peter Oppenheimer
—
43
Tom McFarlane
Scientist
—
44
David C. Parnes
Raincoat Man
—
45
Allen Poirson
Harold McDonald
—
46
David Politzer
Robert Serber
—
47
Bill Rubenstein
Times Reporter
—
48
Ken Strausbaugh
Observation Officer
—
49
Walter Sullivan
Henry Stimson
—
50
Brian Wandell
Dennis Talmudge
—
51
John Williams
Mack Stoddard
—
52
Matthew Faison
(voice)
—
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