- Jean Simmons
- Lavinia
- Victor Mature
- Captain
- Alan Young
- Androcles
- Robert Newton
- Ferrovius
- Maurice Evans
- Emperor Antoninus (Caesar)
- Elsa Lanchester
- Megaera
- Reginald Gardiner
- Lentulus
- Gene Lockhart
- Menagerie Keeper
- Alan Mowbray
- Editor of Gladiators
- Noel Willman
- Spintho
- John Hoyt
- Cato
- Jim Backus
- Centurion
- Lowell Gilmore
- Metellus
- Woody Strode
- The Lion
- Abdullah Abbas
- Gladiator
- Doris Barton
- Vestal Virgin
- Mary Bayless
- Christian
- Chet Brandenburg
- Christian
- Carol Brooks
- Vestal Virgin
- Joe Brooks
- Roman Soldier
- James J. Casino
- Roman Soldier
- Lillian Clayes
- Christian Woman
- Harry Cording
- Soldier
- Paul Cristo
- Roman Citizen
- Clint Dorrington
- Officer in Forest
- Daniel Elam
- Servant
- Dick Elliott
- Ox Cart Driver
- Harry Evans
- Christian
- Margaret Farrell
- Vestal Virgin
- Bess Flowers
- Christian Woman
- Robert Foulk
- Soldier
- Curt Furberg
- Roman Citizen
- Don Garrett
- Officer
- Helen Gereghty
- Christian
- Charlie Hall
- Town Crier
- Jackson Halliday
- Soldier
- Beth Hartman
- Vestal Virgin
- Shep Houghton
- Gladiator
- Clark Howat
- Officer
- George Huggins
- Christian
- Stubby Kruger
- Officer in Forest
- Harry Lauter
- Officer
- Sylvia Lewis
- Queen of the Vestal Virgins
- Chester Marshall
- Call Boy
- Strother Martin
- Soldier
- Larry McGrath
- Vendro
- John Merton
- Officer
- Frank Mills
- Christian
- Josephine Parra
- Vestal Virgin
- Steve Pendleton
- Soldier
- Jean Ransome
- Vestal Virgin
- Richard Reeves
- Gladiator
- Mike Road
- Retiarius
- Robert Robinson
- Roman Soldier
- Victor Romito
- Roman
- Buddy Roosevelt
- Christian
- Alex Sharp
- Officer
- Jack Shea
- Officer
- Millard Sherwood
- Christian
- Midge Ware
- Christian Woman
