• 
• Lionel Barrymore
• Flik
  Tito Beppi
  

• 
• Irene Fenwick
• Simonetta
  

• 
• Harry Craven
• Second Ragamuffin
  

• 
• Vaughn De Leath
• Signora Calvaro
  

• 
• Jennie Dickerson
• Signora Ferice
  

• 
• Myra Florian
• Lilly Blanchette
  

• 
• Henry Herbert
• Prof. Gambella
  

• 
• Alice Horine
• Signora Torre
  

• 
• Lucille Kahn
• Margherita
  

• 
• Micheline Keating
• Signorina Crispi
  

• 
• Ian Keith
• Luigi Ravelli
  

• 
• Kathleen Kerrigan
• Signora del Monte
  

• 
• Leah La Roux
• The Rienzi Sisters
  

• 
• Nick Long
• Bibi
  

• 
• Giorgio Majeroni
• Conte Castiglione
  Father Saverio
  

Replacement

• 
• Agnes McCarthy
• Signora Capelli
  

• 
• Rose Morison
• Giancinta
  

• 
• Guy Nichols
• Federico
  

• 
• Thomas Reynolds
• Signor Del Papa
  

• 
• Susanna Rossi
• The Rienzi Sisters
  

• 
• Sidney Toler
• Flok
  

• 
• Charles Firmbach, Jr.
• First Ragamuffin
  

• 
• David Belasco
• Writer
  Staging
  Producer
  

• 
• Tom Cushing
• Writer
  

• 
• Faurto Martini
• Source Material (from "Ridi, Pagliaccio")
  

• 
• Victor J. Petry
• Scenes adapted
  

• 
• Stroppa
• Scenic Design
  

• 
• George Hadden
• Costume Design