 Elvis PresleyWalter Gulick | Walter Gulick |
 Gig YoungWilly Grogan | Willy Grogan |
 Lola AlbrightDolly Fletcher | Dolly Fletcher |
 Joan BlackmanRose Grogan | Rose Grogan |
 Charles BronsonLew Nyack | Lew Nyack |
 David LewisOtto Danzig | Otto Danzig |
 Robert EmhardtMaynard | Maynard |
 Liam RedmondFather Higgins | Father Higgins |
 Judson PrattHowie Zimmerman | Howie Zimmerman |
 Ned GlassMax Lieberman | Max Lieberman |
 George MitchellHarry Sperling | Harry Sperling |
 Roy RobertsJerry Bathgate | Jerry Bathgate |
 Michael DanteJoie Shakes | Joie Shakes |
 Richard DevonMarvin | Marvin |
 Jeff MorrisRalphie (as Jeffrey Morris) | Ralphie (as Jeffrey Morris) |
 Chris AlcaideDanzig Hood (uncredited) | Danzig Hood (uncredited) |
 Ed AsnerAssistant District Attorney Frank Gerson (uncredited) | Assistant District Attorney Frank Gerson (uncredited) |
| MMushy CallahanRomero Fight Referee (uncredited) | Romero Fight Referee (uncredited) |
| NNick DimitriBoxer (uncredited) | Boxer (uncredited) |
| DDuke FishmanFight Crowd Member (uncredited) | Fight Crowd Member (uncredited) |
 Frank GerstleRomero's Manager (uncredited) | Romero's Manager (uncredited) |
| JJoe GrayTrainer (uncredited) | Trainer (uncredited) |
| AAl HaskellFight Spectator (uncredited) | Fight Spectator (uncredited) |
 Jimmie HoranFight Spectator (uncredited) | Fight Spectator (uncredited) |
| KKip KingRound Card Man at Romero Fight (uncredited) | Round Card Man at Romero Fight (uncredited) |
 George J. LewisRomero's Trainer (uncredited) | Romero's Trainer (uncredited) |
 Ralph MoodyPeter J. Prohosko (uncredited) | Peter J. Prohosko (uncredited) |
 Gil PerkinsFreddie (uncredited) | Freddie (uncredited) |
 Bert RemsenMax (uncredited) | Max (uncredited) |
 Jeffrey SayreBevis (uncredited) | Bevis (uncredited) |
