 Paul NewmanRocky Graziano | Rocky Graziano |
 Pier AngeliNorma Graziano | Norma Graziano |
 Everett SloaneIrving Cohen | Irving Cohen |
 Eileen HeckartMa Barbella | Ma Barbella |
 Sal MineoRomolo | Romolo |
 Harold J. StoneNick Barbella | Nick Barbella |
 Joseph BuloffBenny | Benny |
 Arch JohnsonHeldon | Heldon |
 Sammy WhiteWhitey Bimstein | Whitey Bimstein |
| RRobert P. LiebD. A. Hogan | D. A. Hogan |
 Theodore NewtonEdward Eagan | Edward Eagan |
 Steve McQueenFidel (uncredited) | Fidel (uncredited) |
 Stanley AdamsRomolo's Attorney (uncredited) | Romolo's Attorney (uncredited) |
 Fred AldrichRingside Photographer (uncredited) | Ringside Photographer (uncredited) |
| LLeon AltonFight Spectator (uncredited) | Fight Spectator (uncredited) |
 William BoyettMilitary Policeman (uncredited) | Military Policeman (uncredited) |
 Bart BravermanBoy (uncredited) | Boy (uncredited) |
| JJohn BreenHearing Specatator (uncredited) | Hearing Specatator (uncredited) |
 Frank CampanellaDetective (uncredited) | Detective (uncredited) |
| WWalter CartierPolack (uncredited) | Polack (uncredited) |
 Angela CartwrightAudrey at Age 3 (uncredited) | Audrey at Age 3 (uncredited) |
 George CisarFence (uncredited) | Fence (uncredited) |
| RRuss ClarkZale Fight Referee (uncredited) | Zale Fight Referee (uncredited) |
| TTom ColemanReporter at Sparring Session (uncredited) | Reporter at Sparring Session (uncredited) |
 Russ ConwayCaptain Grifton (uncredited) | Captain Grifton (uncredited) |
 Gene CooganBookie (uncredited) | Bookie (uncredited) |
 Clancy CooperCaptain Lancheck (uncredited) | Captain Lancheck (uncredited) |
 Matt CrowleyLou Stillman (uncredited) | Lou Stillman (uncredited) |
 Michael DanteShorty (uncredited) | Shorty (uncredited) |
 Ray DantonReporter (voice) (uncredited) | Reporter (voice) (uncredited) |
