as Spartacus Laurence Olivier as Crassus Jean Simmons as Varinia Charles Laughton as Gracchus Peter Ustinov as Batiatus Tony Curtis as Antoninus John Gavin as Julius Caesar John Dall as Marcus Glabrus (Crassus' protege) Nina Foch as Helena Glabrus John Ireland as Crixus Herbert Lom as Tigranes Levantus (pirate envoy) Charles McGraw