• 
• Thom Christopher
• 2nd Guard
  

• 
• Linda De Coff
• Frida
  

• 
• Michael Diamond
• 1st Guard
  

• 
• Michael Durrell
• Ordulph
  

• 
• Rex Harrison
• "Henry IV"
  

• 
• Paul Hecht
• Baron Tito Belcredi
  

• 
• Eileen Herlie
• Countess Matilda Spina
  

• 
• David Hurst
• Dr. Dionysius Genoni
  

• 
• Stephen D. Newman
• Landolph
  

• 
• Reno Roop
• Berthold
  

• 
• Douglas Seale
• Giovanni
  

• 
• George Taylor
• Harold
  

• 
• Rudolph Willrich
• Marquis Carlo Di Nolli
  

• 
• Ruth Hunt
• Countess Matilda Spina
  Frida
  

• 
• George Boyd
• 1st Guard
  2d Guard
  Berthold
  Giovanni
  Harold
  Landolph
  Ordulph
  

• 
• Thom Christopher
• Berthold
  Landolph
  Marquis Carlo Di Nolli
  

• 
• Michael Diamond
• Dr. Dionysius Genoni
  Harold
  Ordulph
  

• 
• Stephen D. Newman
• Baron Tito Belcredi
  

• 
• Douglas Seale
• Dr. Dionysius Genoni
  

• 
• Luigi Pirandello
• Writer
  

• 
• Stephen Rich
• Writer
  

• 
• Clifford Williams
• Director
  

• 
• Abd'el Farrah
• Scenic Design
  Costume Design
  

• 
• Ray Diffen
• Costume Supervision and Execution
  

• 
• Neil Peter Jampolis
• Lighting and Scenery Supervision
  

• 
• William Weaver
• Production Stage Manager
  

• 
• George Boyd
• Stage Manager
  

• 
• Ben Washer
• Press Representative
  

• 
• Rogers, Cowan & Brenner
• Press Representative
  

• 
• S. Hurok
• Producer
  

• 
• Elliot Martin
• Original Producer