- Ricardo Montalban
- Pietro Donati
- Betta St. John
- Lady Iolanthe Rogliano
- Rick Jason
- Enzio Siniscola
- Carolyn Jones
- Elaine of Siniscola
- Whitfield Connor
- Frederick II
- Michael Ansara
- Count Alesandro Siniscola
- Edgar Barrier
- Baron Rogliano
- Nelson Leigh
- Isaac
- Pamela Duncan
- Zenobia
- Guy Prescott
- Donati
- Morris Ankrum
- Undetermined Secondary Role
- Edward Coch
- Giuseppe
- Gene Darcy
- Italian Prince
- Poppy del Vando
- Gina
- Nyra Monsour
- Maria
- Leonard Penn
- Haroun
- Keith Richards
- Spectator
