Fredric March
Marcus Superbus - Prefect of Rome
Acting
Elissa Landi
Mercia
Acting
Claudette Colbert
Empress Poppaea
Acting
Charles Laughton
Emperor Nero Claudius Caesar
Acting
Ian Keith
Tigellinus
Acting
Arthur Hohl
Titus
Acting
Harry Beresford
Favius Fontelas
Acting
Tommy Conlon
Stephan
Acting
Ferdinand Gottschalk
Glabrio
Acting
Vivian Tobin
Dacia
Acting
William V. Mong
Licinius
Acting
Joyzelle Joyner
Ancaria
Acting
Richard Alexander
Viturius
Acting
Nat Pendleton
Strabo
Acting
Clarence Burton
Servillius
Acting
Harold Healy
Tybul
Acting
Robert Seiter
Philodemus
Acting
Charles Middleton
Tyros
Acting
Henry Brandon
Colosseum Spectator (uncredited)
Acting
John Carradine
Christian Martyr / Gladiator Leader / Voice in Coliseum Mob (uncredited)
Acting
Dave O'Brien
Christian on Stairway (uncredited)
Acting
Sally Rand
Crocodiles' Victim (uncredited)
Acting
Arthur Shields
Chaplain Costello (1944 Re-Release Prologue) (uncredited)
Acting
Tom Tully
Hoboken (1944 Re-Release Prologue) (uncredited)
Acting
Lionel Belmore
Bettor of 300 Silver
Acting