• 
• Boris Aplon
• Doctor
  Official of the Opera House
  

• 
• Conrad Bain
• Vitek
  

• 
• Whitfield Connor
• Berthold Gregor
  

• 
• Dalton Dearborn
• Conductor
  Servant
  

• 
• Taylor Graves
• Frantz
  Opera Manager
  

• 
• Eileen Herlie
• Emilia Marty
  

• 
• Eric House
• Hauk-Shendorf
  

• 
• William Hutt
• Dr. Kolenaty
  

• 
• Nancy Malone
• Kristina
  

• 
• Richard Morse
• Janek Prus
  

• 
• Karel Stepanek
• Baron Prus
  

• 
• Nan Martin
• Emilia Marty
  

• 
• Karel Capek
• Writer
  

• 
• Tyrone Guthrie
• Book Adaptation
  Director
  

• 
• Norris Houghton
• Scenic Design
  

• 
• Patton Campbell
• Costume Design
  

• 
• Tharon Musser
• Lighting Design
  

• 
• Robert Woods
• Production Stage Manager
  

• 
• Jack Merigold
• Stage Manager
  

• 
• Ben Kornzweig
• General Press Representative
  

• 
• Anthony Geiss
• General Press Representative
  

• 
• The Phoenix Theatre
• Producer