• 
• Gus Alexander
• Phileon Button
  

• 
• Florenz Ames
• Grand Duke Hubert
  

• 
• Eric Blore
• Louis VII (King of Arcacia)
  

• 
• Adam Carroll
• Pianist
  

• 
• Arthur Cole
• Mr. Sneckkenberger
  

• 
• Peggy Cornell
• Countess Carini
  

• 
• Oscar Figman
• Baron Von Holdenson
  

• 
• Catherine Gallimore
• Bijou
  

• 
• Roy Hoyer
• Count Bernadine
  

• 
• Gattison Jones
• Duke of Berascon
  

• 
• Jeanette MacDonald
• Princess Alestine Victorine Angela
  

• 
• Jane Manners
• The Girl from London
  

• 
• Audrey Maple
• Margaret, Queen Consort of Arcacia
  

• 
• Ralph Rainger
• Pianist
  

• 
• James Ray
• Servant
  

• 
• Alison Skipworth
• Queen Ferdinande
  

• 
• Fanny Todd Mitchell
• Writer
  

• 
• Robert Marshall
• Source Material (from "A Royal Family")
  

• 
• George F. Marion
• Staging
  

• 
• Lee Shubert
• Producer
  

• 
• J.J. Shubert
• Producer