Tyrone Power (Andrea Orsini)
Orson Welles (Cesare Borgia)
Wanda Hendrix (Camilla Verano)
Everett Sloane (Mario Belli)
Marina Berti (Angela Borgia)
Katina Paxinou (Mona Zeppo Constanza)
Ludmilla Dudarova (Vittoria)
Adriano Ambrogi (Townsman)
Joop van Hulzen (D'Este)
Eugene Deckers (Borgia Henchman)
Franco Corsaro (Mattia)
Eduardo Ciannelli (Art dealer)
James Carney (Alphonso D'Este)
Eva Brauer (Fabio)
Rena Lennart (Lady in waiting)
Giuseppe Faeti (Priest)
Felix Aylmer (Count Marc Antonio Verano)
Leslie E. Bradley (Don Esteban)