• 
• Wesley Addy
• Old Cardinal
  

• 
• Capt. Sidney Bassler
• A Monk
  Senator I
  

• 
• Leonard Bell
• A Monk
  

• 
• Harris Brown
• Ballade Singer
  

• 
• Frank Campanella
• A Scholar
  Senator II
  

• 
• Mary Grace Canfield
• Elderly Lady
  

• 
• John Carradine
• Inquisitor
  

• 
• Michael Citro
• Andrea
  Singer
  

• 
• Taylor Graves
• Clavius
  

• 
• Don Hanmer
• Little Monk
  

• 
• Pitt Herbert
• Supporting Monk
  

• 
• Harry Hess
• Lord Chamberlain
  

• 
• Werner Klemperer
• Infuriated Monk
  

• 
• Rusty Lane
• Barbarini
  

• 
• Charles Laughton
• Galileo
  

• 
• Richard Leone
• Singer
  

• 
• Iris Mann
• Ballade Singer's Daughter
  

• 
• Dwight Marfield
• Federzoni
  

• 
• Allen Martin
• Curtain Boy
  

• 
• Joan McCracken
• Virginia
  

• 
• Earl Montgomery
• Duke of Florence
  

• 
• Elizabeth Moore
• Ballade Singer's Wife
  

• 
• Thomas Palmer
• Philosopher
  

• 
• Nehemiah Persoff
• Andrea
  

• 
• Philip Robinson
• Matti
  

• 
• Larry Rosen
• Prince
  

• 
• Lawrence Ryle
• Bellarmin
  

• 
• Hester Sondergaard
• Sarti
  

• 
• Warren Stevens
• Informer
  

• 
• Fred Stewart
• Priuli
  

• 
• John Straub
• Sagredo
  

• 
• Philip Swander
• Ludovico
  

• 
• Donald Symington
• Giuseppi
  

• 
• Albert Tavares
• Singer
  

• 
• Bertolt Brecht
• Writer
  

• 
• Charles Laughton
• Translation
  

• 
• Hanns Eisler
• Music
  

• 
• Albert Brush
• Lyrics
  

• 
• Joseph Losey
• Director
  

• 
• Lotte Goslar
• Choreographer
  

• 
• Robert Davison
• Scenic Design
  Costume Design
  

• 
• The Experimental Theatre, Inc.
• Producer
  

• 
• The American National Theatre and Academy
• Producer
  

• 
• T. Edward Hambleton
• Producer