Fat Man and Little Boy_
"The story of the extraordinary people who changed our world."
Assigned to oversee the development of the atomic bomb, Gen. Leslie Groves is a stern military man determined to have the project go according to plan. He selects J. Robert Oppenheimer as the key scientist on the top-secret operation, but the two men clash fiercely on a number of issues. Despite their frequent conflicts, Groves and Oppenheimer ultimately push ahead with two bomb designs — the bigger "Fat Man" and the more streamlined "Little Boy."
Starring
Paul Newman, Dwight Schultz, Bonnie Bedelia
Updated Feb 16, 2026
WHERE TO WATCH
Prime Video
9 countries
G
Google Play
6 countries
Apple TV
4 countries
YouTube
3 countries
DROPTHE_ GOSSIP
Year context
Fat Man and Little Boy was released 37 years ago in 1989.
Overview
Assigned to oversee the development of the atomic bomb, Gen. Leslie Groves is a stern military man determined to have the project go according to plan. He se...
Fat Man and Little Boy is a Drama, History, War film with a runtime of 2h 7m.
CAST (20)
Paul Newman
Gen. Leslie R. Groves
Dwight Schultz
J. Robert Oppenheimer
Bonnie Bedelia
Kitty Oppenheimer
John Cusack
Michael Merriman
Laura Dern
Kathleen Robinson
Ron Frazier
Peter de Silva
John C. McGinley
Richard Schoenfield
Natasha Richardson
Jean Tatlock
Ron Vawter
Jamie Latrobe
MB
Michael Brockman
William "Deke" Parsons
Del Close
Dr. Kenneth Whiteside
John Considine
Robert Tuckson
Allan Corduner
Franz Goethe
JD
Joe D'Angerio
Seth Neddermeyer
Jon DeVries
Johnny Mount
James Eckhouse
Robert Harper
Todd Field
Robert Wilson
Mary Pat Gleason
Dora Welsh
Clark Gregg
Douglas Panton
Péter Halász
George Kistiakowsky
DETAILS
Release
Status
Released
Runtime
127 min (2h 7m)
Country
Rating
6.2/10 (157 votes)
FREQUENTLY ASKED QUESTIONS
What is Fat Man and Little Boy about?
Assigned to oversee the development of the atomic bomb, Gen. Leslie Groves is a stern military man determined to have the project go according to plan. He selects J. Robert Oppenheimer as the key scientist on the top-secret operation, but the two men clash fiercely on a number of issues. Despite their frequent conflicts, Groves and Oppenheimer ultimately push ahead with two bomb designs — the bigger "Fat Man" and the more streamlined "Little Boy."
How long is Fat Man and Little Boy?
Fat Man and Little Boy has a runtime of 127 minutes (2h 7m).
Who stars in Fat Man and Little Boy?
The cast of Fat Man and Little Boy includes Paul Newman, Dwight Schultz, Bonnie Bedelia, John Cusack, Laura Dern.
What is the rating of Fat Man and Little Boy?
Fat Man and Little Boy has a rating of 6.2 out of 10 based on 157 votes on TMDB.
GENRES (3)
Drama
History
War