Kirk Douglas as Spartacus

Laurence Olivier as Marcus Licinius Crassus

Jean Simmons as Varinia

Charles Laughton as Sempronius Gracchus

Peter Ustinov as Lentulus Batiatus

John Gavin as Julius Caesar

Tony Curtis as Antoninus

Nina Foch as Helena Glabrus

John Ireland as Crixus

Herbert Lom as Tigranes Levantus

John Dall as Marcus Publius Glabrus

Woody Strode as Draba

Harold J. Stone as David

Charles McGraw as Marcellus

Joanna Barnes as Claudia Marius

Peter Brocco as Ramon

Paul Lambert as Gannicus

Robert J. Wilke as Guard captain

Nick Dennis as Dionysius

John Hoyt as Caius

Frederick Worlock as Laelius

Paul Baxley as Gladiator (uncredited)

Louie Elias as Gladiator (uncredited)

Brad Harris as Gladiator (uncredited)

Hubie Kerns as Gladiator (uncredited)

Gordon Mitchell as Gladiator (uncredited)

Regis Parton as Gladiator (uncredited)

Victor Paul as Gladiator (uncredited)

Jack Perkins as Gladiator (uncredited)

Wally Rose as Gladiator (uncredited)

Aaron Saxon as Gladiator (uncredited)

Tom Steele as Gladiator (uncredited)

Jerry Summers as Gladiator (uncredited)

Shari Lee Bernath as Little Girl (uncredited)

Bill Blackburn as Prisoner (uncredited)

David Bond as Slave (uncredited)

Polly Burson as Slave (uncredited)

Carol Daniels as Slave Girl (uncredited)

Lila Finn as Slave (uncredited)

Harold Goodwin as Slave (uncredited)

Sol Gorss as Slave Leader (uncredited)

Betty Harford as Slave (uncredited)

Harry Harvey Jr. as Slave (uncredited)

Wayne Heffley as Slave Guard (uncredited)

Lars Hensen as Slave (uncredited)

Charles Horvath as Slave Leader (uncredited)

Shep Houghton as Slave (uncredited)

Pete Kellett as Slave (uncredited)

Joan McKellen as Slave (uncredited)

Eddie Parker as Slave (uncredited)

Gil Perkins as Slave Leader (uncredited)

Chuck Roberson as Slave (uncredited)

Frosty Royce as Slave (uncredited)

Autumn Russell as Slave Girl (uncredited)

Kay Stewart as Slave (uncredited)

Kay Stewart as Slave Girl (uncredited)

Helen Thurston as Slave (uncredited)

Louise Vincent as Slave at Gracchus' Home (uncredited)

Joe Canutt as Soldier (uncredited)

Bill Catching as Soldier (uncredited)

Chuck Courtney as Soldier (uncredited)

Chuck Hayward as Soldier (uncredited)

Robert F. Hoy as Soldier (uncredited)

Valley Keene as Soldier (uncredited)

Cliff Lyons as Soldier (uncredited)

Bill Raisch as Soldier Whose Arm is Hacked Off (uncredited)

Buddy Van Horn as Soldier (uncredited)

Jack Williams as Soldier (uncredited)

Paul E. Burns as Fimbria (uncredited)

Wayne Burson as Guard (uncredited)

Dick Crockett as Guard (uncredited)

John Daheim as Capua Guard (uncredited)

Carey Loftin as Guard (uncredited)

Harvey Parry as Guard (uncredited)

Ronnie Rondell Jr. as Guard (uncredited)

Don Turner as Guard (uncredited)

Peter Virgo as Guard (uncredited)

Fred Zendar as Guard (uncredited)

Ted de Corsia as Legionnaire (uncredited)

Terence de Marney as Majordomo (uncredited)

Johnny Duncan as Beheaded Man (uncredited)

Roy Engel as Roman Businessman (uncredited)

Paul Keast as Roman Businessman (uncredited)

Kenner G. Kemp as Roman Senator (uncredited)

Paul Kruger as Roman Senator (uncredited)

Otto Malde as Roman General (uncredited)

Scott Seaton as Roman Senator (uncredited)

Richard Farnsworth as Salt Mine Slave / Gladiator / Slave General (uncredited)

Logan Field as Centurion (uncredited)

John Stephenson as Centurion (uncredited)

Robert Fuller as Extra (uncredited)

Jeanne Gerson as Woman Selling Chestnuts (uncredited)

Seamon Glass as Pirate (uncredited)

Preston Peterson as Pirate (uncredited)

George Robotham as Pirate (uncredited)

James Griffith as Otho (uncredited)

Jack Grinnage as Petitioner (uncredited)

Anthony Jochim as Petitioner (uncredited)

Joe Haworth as Marius (uncredited)

Vinton Hayworth as Metallius (uncredited)

Loren Janes as Salt Mine Slave / Gladiator / Slave General (uncredited)

Jil Jarmyn as Julia (uncredited)

Aron Kincaid as Crassus' Standard-Bearer (uncredited)

Dayton Lummis as Symmachus (uncredited)

Bob Morgan as Galeno (uncredited)

Tracy Olsen as Girl (uncredited)

Leonard Penn as Garrison Officer (uncredited)

Vic Perrin as Narrator (voice) (uncredited)

Larry Thor as Staff Officer (uncredited)

Dale Van Sickel as Trainer (uncredited)

Carleton Young as Herald (uncredited)

Duke Fishman as Roman Senator (uncredited)

Robert Stevenson as Legionnaire (uncredited)

John Barton as Slave (uncredited)

Jerry Brown as Soldier (uncredited)

John Benson as Guard (uncredited)

Arthur Batanides as Legionnaire (uncredited)

Rudy Germane as Soldier (uncredited)