• 
• Ralph Bell
• Aaron Stein
  

• 
• Herbert Berghof
• Edward Teller
  

• 
• Philip Bosco
• Curtis Moffat Jr.
  

• 
• Charles Cioffi
• Major Nicholas Radzi
  

Replacement

• 
• Whitfield Connor
• Thomas A. Morgan
  

Replacement

• 
• Stephen Elliott
• John Lansdale
  

• 
• Barnett Epstein
• Custodian
  

• 
• Eduard Franz
• Ward V. Evans
  

Replacement

• 
• Douglas Hayle
• Custodian
  Stenographer
  

• 
• Patrick Horrigan
• Custodian
  

• 
• Cec Linder
• Franklin S. Hardiman
  

• 
• Robert Molock
• Custodian
  Stenographer
  

• 
• Robert Phalen
• H. Thomas Spaulding
  

• 
• Paul Rudd
• Security Guard
  

• 
• Stefan Schnabel
• Hans Bethe
  

Replacement

• 
• Joseph Schroer
• Security Guard
  

• 
• Jean-Pierre Stewart
• Security Guard
  

• 
• Harry Townes
• Gordon Gray
  

Replacement

• 
• Tony Van Bridge
• Jacob Lehmann
  

Replacement

• 
• Ronald Weyand
• Walker Leroy Adams
  

• 
• Joseph Wiseman
• J. Robert Oppenheimer
  

Replacement

• 
• Paul Sparer
• J. Robert Oppenheimer
  

Replacement

• 
• Ray Fry
• Curtis Moffat Jr.
  Jacob Lehmann
  

Replacement

• 
• Ben Hammer
• Edward Teller
  John Lansdale
  Thomas A. Morgan
  

Replacement

• 
• William Myers
• Hans Bethe
  Ward V. Evans
  

Replacement

• 
• Ray Stewart
• Franklin S. Hardiman
  Gordon Gray
  Walker Leroy Adams
  

Replacement

• 
• Heinar Kipphardt
• Writer
  

• 
• Ruth Speirs
• Translator
  

• 
• Gordon Davidson
• Director
  

• 
• Peter Wexler
• Scenic Design
  

• 
• Constance Ross
• Costume Design
  

• 
• John Gleason
• Lighting Design
  

• 
• Barbara-Mae Phillips
• Production Stage Manager
  

• 
• Patrick Horrigan
• Stage Manager
  

• 
• Lincoln Center Theater
• Producer