After fierce Roman commander Marcus Vinicius becomes infatuated with beautiful Christian hostage Lygia, he begins to question the tyrannical leadership of the despotic emperor Nero.
| Directing | Mervyn LeRoy | Director |
| Writing | S. N. Behrman | Screenplay |
| Writing | Sonya Levien | Screenplay |
| Writing | John Lee Mahin | Screenplay |
| Writing | Henryk Sienkiewicz | Novel |
| Production | Sam Zimbalist | Producer |
| Sound | Miklós Rózsa | Original Music Composer |
| Camera | William V. Skall | Director of Photography |
| Camera | Robert Surtees | Director of Photography |
| Editing | Ralph E. Winters | Editor |
| Art | Edward C. Carfagno | Art Direction |
| Art | Cedric Gibbons | Art Direction |
| Art | William A. Horning | Art Direction |
| Art | Hugh Hunt | Set Decoration |
| Art | Elso Valentini | Set Decoration |
| Production | Mel Ballerino | Casting |
| Production | Irene Howard | Casting |
| Crew | Hugh Gray | Additional Writing |
| Costume & Make-Up | Charles E. Parker | Makeup Supervisor |
| Costume & Make-Up | Joan Johnstone | Hair Designer |
| Costume & Make-Up | Sydney Guilaroff | Hair Designer |
| Costume & Make-Up | Herschel McCoy | Costume Design |
| Crew | Aurel Milloss | Choreographer |
| Crew | Marta Obolensky | Choreographer |
| Writing | Hugh Gray | Lyricist |
| Sound | Eugene Zador | Orchestrator |
| Camera | Arthur Lemming | Assistant Camera |
| Camera | George Pink | Camera Operator |
| Camera | John Schmitz | Camera Operator |
| Crew | Nuno Salvação Barreto | Stunts |
| Crew | Alfred Schneider | Stunt Coordinator |
| Crew | A. Arnold Gillespie | Special Effects |
| Crew | Tom Howard | Special Effects |
| Crew | Donald Jahraus | Special Effects |
| Crew | Belita Pechtl Klant | Stunts |
| Crew | Jean Michon | Stunts |
| Sound | Douglas Shearer | Sound Recordist |
| Sound | Piero Cavazzuti | Assistant Sound Designer |
| Sound | Robert B. Lee | Sound |
| Sound | George G. Schneider | Sound |
| Art | Al Goodman | Set Designer |
| Art | Italo Tomassi | Set Designer |
| Directing | Peter Bolton | Assistant Director |
| Directing | Sergio Leone | Second Unit Director |
| Directing | Anthony Mann | Second Assistant Director |
