Victor Mature

Captain

Jean Simmons

Lavinina

Alan Young

Androcles

Robert Newton

Ferrovius

Maurice Evans

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

Strother Martin

Soldier (uncredited)

Millard Sherwood

Christian (uncredited)