 Anthony QuinnDon Angelo DiMorra | Don Angelo DiMorra |
 Frederic ForrestTony Fargo | Tony Fargo |
 Robert ForsterFrank Regalbuto | Frank Regalbuto |
 Al LettieriVince Fargo | Vince Fargo |
 Angel TompkinsRuby Dunne | Ruby Dunne |
 Charles CioffiOrlando | Orlando |
 Jo Anne MeredithMarie | Marie |
 Barry RussoDon Aggimio Bernardo | Don Aggimio Bernardo |
 Louis ZorichMitch | Mitch |
 Anthony CharnotaJohnny Tresca | Johnny Tresca |
 Ina BalinNella | Nella |
 Joe SantosJoe Lucci | Joe Lucci |
 Frank De KovaGiunta | Giunta |
 Abe VigodaDon Talusso | Don Talusso |
 Victor ArgoAugie the Horse | Augie the Horse |
 Val BisoglioPete Lazatti | Pete Lazatti |
 Robert CarricartMike Spada | Mike Spada |
| FFrank ChristiHarold Early | Harold Early |
 Sid HaigThe Arab | The Arab |
| MMaurice SherbaneeCorsican | Corsican |
 George SkaffVito | Vito |
 Vic TaybackRalph Negri | Ralph Negri |
 Tanya Lemani GeorgeParty Guest | Party Guest |
| RRic ManciniSabatini | Sabatini |
| RRoland La StarzaMert Shansky (uncredited) | Mert Shansky (uncredited) |
| CCarlos RomeroMariano Longobardo (uncredited) | Mariano Longobardo (uncredited) |
| FFred StromsoeHijacker (uncredited) | Hijacker (uncredited) |
 George SawayaGarcia (uncredited) | Garcia (uncredited) |
 Lee DelanoSam Zutti (uncredited) | Sam Zutti (uncredited) |
| VVeronica EricsonZutti's Girlfriend (uncredited) | Zutti's Girlfriend (uncredited) |
