- Tommy Trinder
- Tommy Taylor
- Frances Day
- Poppaea
- Sonnie Hale
- The Professor
- Francis L. Sullivan
- Nero
- Diana Decker
- Lydia
- Elisabeth Welch
- Nora
- Mary Clare
- Volumnia
- Ernest Milton
- Titus
- Frederick Piper
- Auctioneer
- Robert Wyndham
- Lionkeeper
- Russell Thorndike
- High Priest
- Danny Green
- Lictor
- James Robertson Justice
- Centurion of the 8th Legion
- Wallace Bosco
- Roman Citizen
- Gerry Judge
- Roman Citizen
- Kay Kendall
- Girl
- Alec Mango
- Secretary
- Charles Paton
- Roman Writing Epitaph
- Bill Shine
- Drunken Roman
- Julie Suedo
- Señorita Ãlvarez
- Frank Tickle
- Master of Ceremonies